The house was exactly like the pictures. It is very spacious - our party of 6 had no problems. Peter was away during our visit; but Maria helped us in his stead. No problems with getting the keys, and no problems during our stay. The house has everything!
It is also in a very central place - you can take the U-Bahn to everywhere. The station is very close. You can also walk to Hauptbahnhof if you feel like it, and if you want to avoid changing trains.
Overall, all of us enjoyed our stay and would definitely recommend!