W e liked the flat due to its price. There is enough space for a group of 5 or 6, a big bathroom and the kitchen has the basic things you need. :)
What we didn't like is, that the address given in the prescription of the flat is not the right one. We booked this flat because we thought it would be in Friedrichshain. Turned out it wasn't, and it is situated in Alt-Treptow more or less 1,3 km far from the address we thought it would be.
But anyways the neighbourhood was ok. And Alex was always answering very fast. Everything was fine and I would recommend the apartment.