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Thalassa Boutique Hotel - Adults Only

4.0 star property

Photo gallery for Thalassa Boutique Hotel - Adults Only

Exterior
Reception
Exterior
Exterior
Bar (on property)

Reviews

9.0 out of 10
Wonderful

Popular amenities

  • Gym
  • Bar
  • 24/7 front desk
  • Pet-friendly

Explore the area

View map
Lassi, Paleostafida Beach, Kefalonia, Ionian Islands, 28100
  • Place, Makris Yalos Beach
    ‪8 min walk‬
  • Place, Kalamia Beach
    ‪3 min drive‬
  • Place, Port of Argostoli
    ‪5 min drive‬
  • Airport, Argostolion (EFL-Kefalonia Island Intl.)
    ‪9 min drive‬

Room options

View all photos for Superior Room, Garden View

Superior Room, Garden View

Superior Room, Garden View

10.0 out of 10
Exceptional
(1 review)
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed OR 2 Twin Beds

View all photos for Superior Room, Sea View

Superior Room, Sea View

Superior Room, Sea View

8.8 out of 10
Excellent
(3 reviews)
  • 28 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 Double Bed OR 2 Twin Beds

View all photos for Deluxe Double Room, Sea View

Deluxe Double Room, Sea View

Deluxe Double Room, Sea View

10.0 out of 10
Exceptional
(1 review)
  • 28 sq m
  • Sea view
  • Sleeps 2
  • 1 Double Bed

View all photos for Suite, Sea View

Suite, Sea View

Suite, Sea View

9.4 out of 10
Exceptional
(3 reviews)
  • 28 sq m
  • Sea view
  • Sleeps 2
  • 1 Double Bed

View all photos for Room, Garden View (King)

Room, Garden View (King)

Room, Garden View (King)

10.0 out of 10
Exceptional
(2 reviews)
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed

View all photos for Design Double Swim-Up Room

Design Double Swim-Up Room

Design Double Swim-Up Room

  • Sleeps 2
  • 1 King Bed

View all photos for Design Room, Partial Ocean View (King)

Design Room, Partial Ocean View (King)

Design Room, Partial Ocean View (King)

  • 30 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 Double Bed

View all photos for Executive Double Room

Executive Double Room

Executive Double Room

  • 30 sq m
  • Sleeps 2
  • 1 King Bed

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About the area

Lassi

Located in Kefalonia, Thalassa Boutique Hotel - Adults Only is a 4-minute drive from Port of Argostoli and 7 minutes from Makris Yalos Beach. .This hotel is 3.2 mi (5.2 km) from Fanari Beach and 4.9 mi (7.9 km) from Ammes Beach.

What's nearby

  • Makris Yalos Beach - 8 min walk - 0.8 km
  • Kalamia Beach - 3 min drive - 1.9 km
  • Cephalonia Botanica - 4 min drive - 3.0 km
  • Port of Argostoli - 5 min drive - 3.4 km
  • Fanari Beach - 7 min drive - 4.9 km

Getting around

  • Argostolion (EFL-Kefalonia Island Intl.) - 12 min drive

Restaurants

  • ‪Costa Costa - ‬12 min walk
  • ‪De Bosset - ‬4 min drive
  • ‪Μαυροειδής - ‬4 min drive
  • ‪Olea Kouzinaki - ‬3 min drive
  • ‪ΤΟ ΔΙΑΒΑ - ‬4 min drive

About this property

Thalassa Boutique Hotel - Adults Only

Adults-only hotel with free breakfast and a fitness center
Thalassa Boutique Hotel - Adults Only offers 35 air-conditioned accommodations with safes and hair dryers. Rooms open to furnished balconies or patios. Flat-screen televisions are featured in guestrooms.

Rooms have partially open bathrooms. Bathrooms include bathtubs or showers and complimentary toiletries. This Kefalonia hotel provides complimentary wireless Internet access. Housekeeping is provided daily.

Recreational amenities at the hotel include a fitness center and a seasonal outdoor pool.
Make yourself at home in one of the 35 air-conditioned rooms featuring flat-screen televisions. Rooms have private furnished balconies or patios. Complimentary wireless internet access is available to keep you connected. Partially open bathrooms with bathtubs or showers feature complimentary toiletries and hair dryers.
Take advantage of recreation opportunities including a fitness center and a seasonal outdoor pool. Additional features at this hotel include complimentary wireless internet access and concierge services.
Enjoy a meal at the restaurant, or stay in and take advantage of the hotel's room service (during limited hours). Wrap up your day with a drink at the bar/lounge. A complimentary buffet breakfast is served daily from 8:00 AM to 10:00 AM.
Featured amenities include dry cleaning/laundry services, a 24-hour front desk, and a library. A roundtrip airport shuttle is provided for a surcharge (available 24 hours), and free self parking is available onsite.
A complimentary buffet breakfast is served each morning between 8:00 AM and 10:00 AM.
Thalassa Boutique Hotel - Adults Only has a restaurant on site.
Room service (during limited hours) is available.

Awards and affiliations

No Boutique Certification - This property has not received an official certification as a Boutique Hotel under the Hellenic Chamber of Hotels' Boutique Hotel certification scheme.

Property amenities

Internet

  • Available in all rooms: Free WiFi
  • Available in some public areas: Free WiFi

Parking and transport

  • 24-hour return airport shuttle on request for a surcharge
  • Free self parking on site

Food and drink

  • Free buffet breakfast available daily 8:00 AM to 10:00 AM
  • A bar/lounge
  • A restaurant

Things to do

  • Gym
  • Library
  • Seasonal outdoor pool

Conveniences

  • 24-hour front desk
  • Safe at front desk

Guest services

  • Concierge services
  • Dry cleaning/laundry service
  • Housekeeping (daily)
  • Tour and ticket assistance

Business services

  • Meeting rooms

Outdoors

  • Garden
  • Pool loungers
  • Pool umbrellas
  • Terrace

Accessibility

  • No lift

More

  • Smoke-free property

Room amenities

Bedroom

  • Bedsheets provided

Bathroom

  • Bathtub or shower
  • Free toiletries
  • Hair dryer
  • Partially-open bathroom
  • Towels provided

Entertainment

  • Flat-screen TV

Food and drink

  • Electric kettle
  • Limited room service

More

  • Air conditioning
  • Desk
  • Safe
  • Soundproofed rooms

Policies

Check-in

Check-in start time: 3:00 PM; Check-in end time: midnight
Late check-in subject to availability
Minimum check-in age: 18

Check-out

Check-out before 11:00 AM

Special check-in instructions

This property offers transfers from the airport (surcharges may apply); guests must contact the property with arrival details before travel, using the contact information on the booking confirmation
Front desk staff will greet guests on arrival at the property

Access methods

Staffed front desk

Pets

Pets allowed
Service animals are welcome, and are exempt from fees

Children and extra beds

Children younger than 18 are not allowed at this adults-only property; all guests 18 and older are welcome
Rollaway/extra 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:

  • A tax is imposed by the city and collected at the property. This tax is adjusted seasonally and might not apply year round. Other exemptions or reductions might apply. For more details, please contact the property using the information on the reservation confirmation received after booking.
  • A tax is imposed by the city: From 1 November - 31 March, EUR 3.00 per accommodation, per night
  • A tax is imposed by the city: From 1 April - 31 October, EUR 10.00 per accommodation, per night

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

Optional extras

  • Airport shuttle fee: EUR 25 per vehicle (one-way)

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
This property accepts credit cards, debit cards, and cash
Cashless transactions are available
Safety features at this property include a fire extinguisher, a smoke detector, and a first aid kit
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
Property Registration Number 0430Κ032A0030901

We should mention

This property does not have elevators
Cash transactions at this property cannot exceed EUR 500, due to national regulations; for further details, please contact the property using information in the booking confirmation
The seasonal pool will be open from April to October
Guests under 18 years old are not permitted at this adults-only property

Property is also known as

Thalassa Argostoli
Thalassa Hotel
Thalassa Hotel Argostoli
Thalassa Hotel Lassi
Thalassa Lassi
Thalassa Hotel KEFALONIA
Thalassa KEFALONIA
Thalassa Boutique Hotel Kefalonia
Thalassa Boutique Kefalonia
Thalassa Boutique
Thalassa Boutique Hotel
Thalassa Adults Only Kefalonia
Thalassa Boutique Hotel - Adults Only Hotel
Thalassa Boutique Hotel - Adults Only Kefalonia
Thalassa Boutique Hotel - Adults Only Hotel Kefalonia

Thalassa Boutique Hotel - Adults Only Reviews

Reviews

9.0

Wonderful

Rating 10 - Excellent. 59 out of 92 reviews
Rating 8 - Good. 26 out of 92 reviews
Rating 6 - Okay. 2 out of 92 reviews
Rating 4 - Poor. 1 out of 92 reviews
Rating 2 - Terrible. 4 out of 92 reviews

9.4/10

Cleanliness

9.2/10

Staff & service

8.8/10

Amenities

9.0/10

Property conditions & facilities

8.6/10

Eco-friendliness

Reviews

4/10 Poor

Rodney

Travelled with partner, Travelled with group
Disliked: Cleanliness, staff & service, amenities
The service from reception was extremely poor. The shower had mould in it. The bed was super hard and uncomfortable. Air con in the room hardly worked. Fridge in room didn’t get cold. Overall, very dissatisfied.
Stayed 2 nights in Jul 2025

2/10 Terrible

Corrie

Travelled with family
Disliked: Cleanliness, staff & service
We showed up to the hotel after 24 hours of travel, we had booked a swim up suite for 4 nights. We arrived and they told us we could not have the room we booked 5 weeks in advance, they gave us an old basement room for our first night. I asked them to return the difference of the room prices to us, and they bluntly said they would not return any money to us. I asked again the next day, they said they would give us a free dinner at their hotel. I said no, I want the value of the room returned, and they said no. Our service was terrible after this the entire time. The servers at the pool bar were very pleasant, the only kindness we received.
Stayed 4 nights in Jul 2025

10/10 Excellent

Justin

Stayed 7 nights in Jul 2025

10/10 Excellent

Bill

Stayed 2 nights in Jul 2025

10/10 Excellent

Yosef

Travelled with group
Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 3 nights in Jul 2025

10/10 Excellent

John J

Travelled with family
Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 4 nights in Jun 2025

10/10 Excellent

Steven

Travelled with partner
Liked: Staff & service, amenities, property conditions & facilities
Great hotel. Fantastic staff. Breakfast great. Wonderful Pool. Don't let the building work at the front put you off. You can't hear any noise at all.
Stayed 3 nights in May 2025

10/10 Excellent

Richard

Travelled with partner
Liked: Cleanliness, amenities, property conditions & facilities
What an amazing hotel. Lovely rooms that are meticulously cleaned each day and given the turn-down service at night. Fantastic food, not only the sumptuous breakfast buffet that's included, but also the lunches and dinners a la carte - all served by friendly, smiling staff. Oh and then a cocktail bar with a glorious view to start or end the night. Cannot fault it.
Stayed 8 nights in May 2025

10/10 Excellent

Paige

Liked: Cleanliness, amenities, property conditions & facilities
Beautiful hotel in a great location. The pool was gorgeous and I had an amazing view of the ocean from my room. The hotel staff were also top tier.
Stayed 3 nights in May 2025

10/10 Excellent

Jordan

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 4 nights in Oct 2024

10/10 Excellent

Francine

Travelled with family
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful property. Hotel staff was very kind and welcoming. We would stay here again.
Stayed 4 nights in Sep 2024

6/10 Okay

Serafim

Stayed 4 nights in Sep 2024

10/10 Excellent

Callum Elliott

Travelled with family, Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Quiet, tranquil hotel with attentive and friendly staff. Beautiful room overlooking the Ionian Sea on an island which felt very safe. Highly recommended.
Stayed 7 nights in Aug 2024

10/10 Excellent

Phoebe

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
We stayed here for 5 nights in July and it was amazing! The hotel is beautiful, the images online do not do it justice. It is quiet, and even in peak season was not super busy. The staff are lovely, and food and drinks are amazing. We were upgraded which was a suprise and the swim up rooms were incredible. We will definitely be staying here again! Thank you!
Stayed 5 nights in Jul 2024

8/10 Good

Jillian

Travelled with partner
Liked: Cleanliness, staff & service, property conditions & facilities
Great hotel with lovely design features. Our initial rooms aircon unit had a fixed temperature so it was like an oven at night. In such hot conditions this wasn’t great - especially when they told us the technician had fixed it and it couldn’t be amended. Only to find out that other guests could control their desired temperature. After 2 nights we had to say something and they changed our room. Everyone comments on the lack of umbrellas by the pool and it’s true - it’s ridiculous and I dont understand why they don’t do anything to resolve it. The only other challenge he is there’s nowhere for guests to shower if you have a late flight. Other than that we had a great stay. Great staff and beautiful views etc
Stayed 11 nights in Aug 2024

8/10 Good

Loan

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Aug 2024

10/10 Excellent

Verified traveller

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 4 nights in Aug 2024

10/10 Excellent

Mary, Wilkes Barre

Liked: Cleanliness, staff & service, property conditions & facilities
The property was lovely. Our room was fabulous with a sea view and breakfast everyday was amazing with beautiful views of the ocean.
Stayed 6 nights in Jul 2024

10/10 Excellent

Robert Leslie David

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Liked everything. Very relaxing, everything high quality, staff go above and beyond but not in your face. Very zen like environment didn't want to leave.
Stayed 7 nights in Jul 2024

10/10 Excellent

Victoria

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 14 nights in Jun 2024

10/10 Excellent

VALERIA

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The hotel is really nice ! Excellent staff! Excellent breakfast and very beautiful room. I think I didn’t receive an upgrade because nobody told me so, but the room I had booked was really nice ! Very happy with our stay
Stayed 2 nights in Jun 2024

10/10 Excellent

Nicholas

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great place to relax in comfort. Staff are excellent and great beaches nearby. Couldn’t fault it and will be returning.
Stayed 7 nights in May 2024

8/10 Good

Roy

Liked: Cleanliness, staff & service, property conditions & facilities
Friendly staff, extra mile, would personally like the bars to be busier. Happy hour should be happy hour, currently too restricted
Stayed 6 nights in May 2024

10/10 Excellent

James

Stayed 5 nights in May 2024

8/10 Good

Ian

Travelled with family
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Well laid out property, staff very good, bar, dinner breakfast all very good. A few technical issues in the room which were resolved.
Stayed 7 nights in Oct 2023