Our (of my girlfriend and me) stay in Berlin was a bit complicate, with last-minute changes of program. Despite these annoying changes of program, Noa was very friendly and understanding. A very nice person. Regarding the flat, the pluses are: a large spacious room bedroom/living room, it was quite clean. Finally, it is very close to the metro and reasonably close to the centre of Berlin.
Minuses: the bathroom is tiny while from the picture doesn't seem so. Shower gel and napkinks (in the kitchen) were missing.