I stayed in Viktoria and Christian's place for 2 nights. I arrived in Berlin hours before the usual check-in time. Viktoria was very kind to let me use the room.
The room itself is quite spacious, comfortable and everything was sparkling clean. The location of the flat is perfect, very close to s/u bahn and trams. Viktoria and Christian are very nice to chat with and great hosts.
I have stayed in several airbnbs in Berlin and this is the best so far! I would like to come back to this airbnb next time and I would recommend it to anyone!