I had the pleasure of staying here throughout the summer on a work trip. It was the perfect location for experiencing some of the best of Berlin and also transport - 5 minutes from Warschauer strasse and 10 minutes from Ostbahnhof, where I caught the train each day. Friedrichshain is a trendy, interesting place to live. Lots of great bars and local shops, walking distance to Karl Marx Allee and Prenzlauerberg to the North and Kreuzberg to the south. The apartment is situated in a very lively area, right next to the famous Berghain nightclub, which is fascinating to witness even if you don't go yourself. But it was never too noisy for us inside to sleep. We felt very safe in the neighbourhood, as with Berlin in general: a typically friendly, chilled out crowd.

The flat is very spacious (two of us stayed here and it was very comfortable), very light with huge windows. Kitchen is well equipped. The bed is very comfy.
Sabine is a wonderful host, very accommodating and very prompt communication. I recommend giving this place a go!