The communication with Fai was very good. She was quickly answering all our requests and gave detailed instructions for everything. In the flat there was a big leaflet with a lot of information on the flat and on the quarter. In total we were three people staying at Fai's flat and everybody had his own room which was very nice - though one of us slept in the spacious living room. The kitchen was very well equipped and even some basic stuff like spices, tea, coffee,... were there for everybody to use. The flat is very close to a metro and a metro/s-bahn station (walk maximum 5min) which was very convenient.
I would definetely recommend Fai's flat, especially for those who want to have a safe and peaceful place as a contrary to Berlin's hustle and bustle.