See all properties
Save

The Mansion on the Sea - Southernmost House in the USA

4.0 star property

Photo gallery for The Mansion on the Sea - Southernmost House in the USA

Mansion Room #201 - Ocean View with private balcony - Adults Only | Terrace/patio
Exterior
Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only
Front of property - evening/night
Front of property - evening/night

Reviews

9.4 out of 10
Exceptional

Popular amenities

  • Bar
  • Room service

Explore the area

Map
1400 Duval Street, Key West, FL, 33040
  • Duval Street
    ‪1 min walk‬
  • South Beach
    ‪1 min walk‬
  • Southernmost Point
    ‪2 min walk‬
  • Key West, FL (EYW-Key West Intl.)
    ‪8 min drive‬

Room options

View all photos for Mansion Room #204 - Courtyard View - Adults Only

Mansion Room #204 - Courtyard View - Adults Only

Mansion Room #204 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #107 - Ocean View - Adults Only

Mansion Room #107 - Ocean View - Adults Only

Mansion Room #107 - Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #203 - Courtyard View - Adults Only

Mansion Room #203 - Courtyard View - Adults Only

Mansion Room #203 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #101 -Ocean Front - Adults Only

Bungalow #101 -Ocean Front - Adults Only

Bungalow #101 -Ocean Front - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed OR 1 King Bed

View all photos for Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

  • 46 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #201 - Ocean View with private balcony - Adults Only

Mansion Room #201 - Ocean View with private balcony - Adults Only

Mansion Room #201 - Ocean View with private balcony - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #202 - Ocean View - Adults Only

Mansion Room #202 - Ocean View - Adults Only

Mansion Room #202 - Ocean View - Adults Only

  • 28 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

  • 28 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

  • 65 sq m
  • Partial ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed

View all photos for Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

  • 46 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #102 - Pool View - Adults Only

Bungalow #102 - Pool View - Adults Only

Bungalow #102 - Pool View - Adults Only

  • 37 sq m
  • Sleeps 4
  • 1 Queen Bed and 1 Double Sofa Bed

View all photos for Cottage #104 - Ocean View w/Direct Pool Access - Adults only

Cottage #104 - Ocean View w/Direct Pool Access - Adults only

Cottage #104 - Ocean View w/Direct Pool Access - Adults only

  • 28 sq m
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed

View all photos for Mansion Room #303 - Courtyard View - Adults Only

Mansion Room #303 - Courtyard View - Adults Only

Mansion Room #303 - Courtyard View - Adults Only

  • 46 sq m
  • City view
  • Sleeps 4
  • 2 Queen Beds

View all photos for Lopez House #109 - Courtyard View - Adults Only

Lopez House #109 - Courtyard View - Adults Only

Lopez House #109 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 Queen Bed

View all photos for Lopez House #205 - Partial Ocean View - Adults Only

Lopez House #205 - Partial Ocean View - Adults Only

Lopez House #205 - Partial Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #206 - Partial Ocean View - Adults Only

Lopez House #206 - Partial Ocean View - Adults Only

Lopez House #206 - Partial Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #207 - Courtyard View - Adults Only

Lopez House #207 - Courtyard View - Adults Only

Lopez House #207 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #103 - Pool View - Adults Only

Bungalow #103 - Pool View - Adults Only

Bungalow #103 - Pool View - Adults Only

  • 28 sq m
  • Sleeps 2
  • 1 Queen Bed

Similar properties

3 outdoor pools, pool umbrellas, pool loungers

Southernmost Beach Resort and Guesthouses

  • Pool
  • Spa
  • Free WiFi
  • Restaurant
4.4 out of 5, Excellent, (2519)
The price is NZ$540
for 1 room
includes taxes & fees
30 Jun - 1 Jul
Southernmost Beach Resort and Guesthouses

About the area

Key West

With a stay at The Mansion on the Sea - Southernmost House in the USA, you'll be centrally located in Key West, steps from Southernmost Point and Duval Street. .This beach hotel is 0.1 mi (0.1 km) from South Beach and 0.1 mi (0.1 km) from Key West Butterfly and Nature Conservatory.

What's nearby

  • Duval Street - 1 min walk - 0.0 km
  • South Beach - 1 min walk - 0.0 km
  • Southernmost Point - 2 min walk - 0.2 km
  • Ernest Hemingway Home and Museum - 8 min walk - 0.7 km
  • Mallory Square - 4 min drive - 1.7 km

Getting around

  • Key West Intl. Airport (EYW) - 9 min drive

Restaurants

  • ‪Old Town Tavern Key West - ‬9 min walk
  • ‪Southernmost Beach Café - ‬1 min walk
  • ‪Southernmost Point Bar In the USA - ‬5 min walk
  • ‪Rum Bar at the Speakeasy Inn - ‬5 min walk
  • ‪Banana Cafe - ‬4 min walk

About this property

The Mansion on the Sea - Southernmost House in the USA

Adults-only beach hotel with outdoor pool
The Mansion on the Sea - Southernmost House in the USA offers 18 air-conditioned accommodations with complimentary newspapers and coffee/tea makers. Each accommodation is individually furnished. Pillowtop beds feature premium bedding. 42-inch flat-screen televisions come with premium cable channels.

Bathrooms include showers, designer toiletries, complimentary toiletries, and hair dryers. This Key West hotel provides complimentary wireless Internet access, with a speed of 500+ Mbps (good for 6+ people or 10+ devices). Housekeeping is provided daily.

Recreational amenities at the hotel include an outdoor pool.

The recreational activities listed below are available either on site or nearby; fees may apply.

Make yourself at home in one of the 18 air-conditioned rooms featuring flat-screen televisions. Your pillowtop bed comes with premium bedding. Complimentary wireless internet access keeps you connected, and cable programming is available for your entertainment. Bathrooms feature showers, designer toiletries, and hair dryers.
Take advantage of recreation opportunities such as an outdoor pool or take in the view from a terrace and a garden. Additional amenities at this Victorian hotel include complimentary wireless internet access, concierge services, and gift shops/newsstands.
Grab a bite at Seaside Cafe at Mansion, a café which features a bar/lounge and an ocean view. You can also stay in and take advantage of the room service. Quench your thirst with your favorite drink at the poolside bar. A complimentary continental breakfast is served daily from 8 AM to 10 AM.
Featured amenities include complimentary newspapers in the lobby, multilingual staff, and luggage storage. Self parking (subject to charges) is available onsite.
A complimentary continental breakfast is served each morning between 8 AM and 10 AM.
Seaside Cafe at Mansion - Overlooking the ocean, this café serves lunch and dinner. Guests can enjoy drinks at the bar.
Room service is available.

Languages

English, French, Russian, Spanish

Property amenities

Internet

  • Available in all rooms: Free WiFi
  • In-room WiFi speed: 500+ Mbps (good for 6+ people or 10+ devices)
  • Available in some public areas: Free WiFi

Parking and transport

  • Parking on site (USD 25 per night)

Food and drink

  • Free continental breakfast available daily 8 AM to 10 AM
  • A bar/lounge
  • A poolside bar
  • A restaurant
  • Coffee and tea in common areas
  • Snack bar/deli

Restaurants on site

  • Seaside Cafe at Mansion

Things to do

  • Outdoor pool
  • Shopping
  • TV in common areas

Conveniences

  • Free newspapers in lobby
  • Gift shop/newsstand
  • Limited-hour front desk
  • Luggage storage
  • Safe at front desk

Guest services

  • Concierge services
  • Housekeeping (daily)
  • Multilingual staff
  • Porter/bellhop
  • Proposal/romance packages
  • Tour and ticket assistance
  • Wedding services

Outdoors

  • Beach loungers
  • Beach towels
  • Garden
  • On the waterfront
  • Outdoor furniture
  • Picnic area
  • Pool loungers
  • Pool umbrellas
  • Terrace

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Upper floors accessible by stairs only
  • Well-lit path to entrance

More

  • 3 buildings
  • 3 floors
  • Built in 1897
  • Designated smoking areas
  • Reception hall
  • Victorian architecture

Room amenities

Bedroom

  • Pillowtop mattress
  • Premium bedding

Bathroom

  • Designer toiletries
  • Hair dryer
  • Shampoo
  • Shower
  • Soap
  • Toilet paper
  • Towels provided

Entertainment

  • 42-inch flat-screen TV with premium cable channels
  • Streaming services

Food and drink

  • Champagne service
  • Coffee/tea maker
  • Room service

More

  • Air conditioning
  • Free daily newspapers
  • Individual furnishings
  • Iron/ironing board

Policies

Check-in

Check-in start time: 4 PM; Check-in end time: 10 PM
Early check-in subject to availability
Contactless check-in available
Late check-in subject to availability
Minimum check-in age: 18

Check-out

Check-out before 11 AM
Contactless check-out available

Special check-in instructions

The front desk is open daily from 8:00 AM - 10 PM
Front desk staffed during limited hours
If you are planning to arrive after 8:00 PM please contact the property in advance using the information on the booking confirmation

Access methods

Front desk (limited hours)

Pets

Pets not allowed

Children and extra beds

Children younger than 18 are not allowed at this adults-only property; all guests 18 and older are welcome
Cribs (infant beds) are not available

Payment types

Important information

Fees

You'll be asked to pay the following charges at the property. Fees may include applicable taxes:

  • Spring Break deposit: USD 250 per stay for guests under 21 years old staying between 1 March - 31 March

We have included all charges provided to us by the property.

Optional extras

  • Self parking fee: USD 25 per night

The above list may not be comprehensive. Fees and deposits may not include tax and are subject to change.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card, or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
Minimum Spring Break check-in age is 24 years old
This property accepts credit cards; cash is not accepted
Noise-free guestrooms cannot be guaranteed
Safety features at this property include a carbon monoxide detector, a fire extinguisher, and a smoke detector
This property has outdoor spaces, such as balconies, patios, terraces which may not be suitable for children; if you have concerns, we recommend contacting the property prior to your arrival to confirm they can accommodate you in a suitable room

We should mention

This property does not have elevators
Children 18 years old and younger are not permitted at this adults-only property
Only registered guests are allowed in the guestrooms

Property is also known as

Southernmost House
Southernmost House Hotel
Southernmost House Hotel Key West
Southernmost House Key West
Southernmost House
The Southernmost House Hotel
The Southernmost House Hotel Adults Only
The Mansion on the Sea Southernmost House in the USA
The Mansion on the Sea - Southernmost House in the USA Hotel
The Mansion on the Sea - Southernmost House in the USA Key West

The Mansion on the Sea - Southernmost House in the USA Reviews

Reviews

9.4

Exceptional

Rating 10 - Excellent. 749 out of 1005 reviews
Rating 8 - Good. 165 out of 1005 reviews
Rating 6 - Okay. 59 out of 1005 reviews
Rating 4 - Poor. 21 out of 1005 reviews
Rating 2 - Terrible. 11 out of 1005 reviews

9.4/10

Cleanliness

9.4/10

Staff & service

9.2/10

Amenities

9.0/10

Property conditions & facilities

9.2/10

Eco-friendliness

Reviews

8/10 Good

Maria

Liked: Staff & service, room comfort

Overpriced for what you get

Stayed for one night there and it was ok, room is nice enough, bed is comfortable but bathroom was a bit tired. It's a good hotel but not for £600 a night, I think the price is based on history of the hotel rather than quality of stay you get.
Stayed 1 night in Feb 2025

10/10 Excellent

Jim

Liked: Staff & service
Stayed 2 nights in Mar 2025

10/10 Excellent

Susan L

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
we loved mansion on the sea ! will definitely be back ps and the breakfast was outstanding!
Stayed 2 nights in Mar 2025

6/10 Okay

joseph

Closeness to dining and entertainment and The sea.
Stayed 3 nights in Mar 2025

10/10 Excellent

Beth

Travelled with group
Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Can't wait to return

Loved every part of our stay at the quaint Hotel. We had a door that led to the pool, so nice. Perfect get away.
Stayed 3 nights in Feb 2025

10/10 Excellent

Rhea

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

richard

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
First time staying here and we loved it! Definitely returning next year ! Entire staff and general manager Nina are super friendly and accommodating . This is an old historical mansion with wonderful views of the ocean and in a great location !
Stayed 4 nights in Feb 2025

10/10 Excellent

Matthew

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great
Stayed 1 night in Mar 2025

6/10 Okay

Neil

Travelled with partner
Liked: Staff & service, amenities
Disliked: Property conditions & facilities
Two historic (previously) homes with rooms that have been turned into sleeping/convenience suites. Not a modernized hotel experience if that is what yo are seeking. Very antiqueish, unique, and rustic and right on the oceanside - however there is no beach area for this hotel. Buildings and rooms retain an authentic old-style appearance but look to have been remodeled some time ago and are in need of basic or new repairs & maintenance - everything inside and outside, as well as the garden grounds, seem a bit shabby, neglected, and not getting the regular "professional" care that such a place deserves - shameful. Parking is good. Continental breakfast is good. Staff is friendly. Location is excellent and very convenient for walking, biking, and commuting everywhere in Key West, Duval St., and oceanside areas. Many bars, shops, and other "adult" related entertainments nearby but the Key West area is kind of sleazy and very touristy focused - not the best area for bringing kids or for those who do not care to drink and party.

10/10 Excellent

Nicholas V

Stayed 3 nights in Feb 2025

10/10 Excellent

Kelli

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 2 nights in Jan 2025

10/10 Excellent

Katherine

Travelled with partner
Liked: Staff & service, property conditions & facilities
Staff were excellent! Room was clean!! Didn’t like the 3rd floor walk up!!
Stayed 3 nights in Feb 2025

10/10 Excellent

Paul

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

Ami

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The staff was very friendly and helpful. The room was delightful and very clean. Breakfast was very good. We loved spending time on the balcony and at the heated pool. We loved having the resort feel with no crowd.
Stayed 5 nights in Feb 2025

10/10 Excellent

Kathleen

Liked: Cleanliness, staff & service, property conditions & facilities
I could walk out to pool and get a chair at the pool, always available.
Stayed 4 nights in Feb 2025

10/10 Excellent

Steve

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

Jim

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great pool. Ocean views.
Stayed 4 nights in Feb 2025

10/10 Excellent

Andrew

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Perfect get away
Stayed 1 night in Feb 2025

10/10 Excellent

Bonnie

The breakfast was wonderful and the desk staff were extremely helpful.
Stayed 2 nights in Feb 2025

10/10 Excellent

Debra

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Mansion at Southernmost House

Beautiful property, very friendly staff, and great location.
Stayed 3 nights in Feb 2025

10/10 Excellent

Ellen

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 1 night in Feb 2025

10/10 Excellent

Gerald

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Great and Relaxing week at the Mansion

Everything about the Mansion was very good. The staff was friendly and very professional. The breakfast was very nice and met all of our needs. Our room was clean and service was very efficient. The grounds were a pleasure to explore and use, especially the pool which provided a view of the ocean. Thank you
Stayed 5 nights in Feb 2025

10/10 Excellent

Edward

Liked: Staff & service, property conditions & facilities
Staff and location could not have been nicer.
Stayed 4 nights in Jan 2025

8/10 Good

Ronald

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The property was wonderful. My only issue was we stayed in room 106 which was right next ro their common bathroom which had a lot of traffic and noise.
Stayed 5 nights in Jan 2025

8/10 Good

Brian, Broomfield

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 2 nights in Jan 2025