My wife and I (both mid-50's) loved this property.
It was perfect for our 3 night visit to Berlin to see friends.
Berlin is/can be an expensive place, and good accommodations are difficult to find sometimes.
Included picture is looking our of our room's window.
Numa was very clean, reasonably priced, and uses modern methods of access, payment, etc.
No staff. You use an application that you download to your phone.
We opted for a larger room which was perfect, simple and clean. The toilet was in a sperate small room (with door) from the bathroom where the walk-in shower and bathroom sink were.
There was a mini-fridge to keep our left-overs fresh, and a HUGE television that we watched some of the Women's World Cup on.
The interior is completely newly built, and very secure. The glass elevator made it easy to move our luggage around.
"Breakfast" if you order it, is delivered in a box to your door. Simple fare; some yogurt, muesli and an orange juice. Don't expect a Continental Breakfast; this is just a simple breakfast in a box. The room had a Nespresso machine and a hot water kettle with both coffee and tea provided.
While you stay, no daily cleaning; like renting an apartment.
Location is PERFECT. This is right in the very lively Mitte area which we found to be very occupied by younger folks. The Weinmeister U-Bahn station is RIGHT THERE.
Parking? Forget it. We parked at the Parkhaus Rathauspassagen (15 min walk) 24-hour, $20/day. Cash only at the card machine.