We liked the apartment very much and it is exactly as the photos show us. It has everything you need for a comfort life. It's not so big, but bright and cosy...perfect for 2 people, but we were 4 and felt comfortable. It's situated in a nice quiet district of Berlin...you have everything close - supermarket, night shop...even bakery(nice surprise). Metro station is 5 minutes walking.
The hosts sent us their personal Berlin guide, so it was very easy to find the flat and to walk around the city)
We had some difficulties with checking in, but in the end everything was resolved.
Only the minus is - thin walls, you can hear your neighbors, and they can hear you I think.
Anyway we were happy to live there, and thank you very much for hosting us. I will recommend to stay here.