From now on I won't go to Berlin before I made sure Stefan's room is available.
The room is large (larger than it looks in the pics! :)), the house is very clean and tidy and the location is perfect. Steps away from the U-bahn and any kind of cafes, shops and facilities, it's also strategically located to visit Kreuzberg, Neukolln and Friedrichshain.
And the bike is fantastic, I've used it everyday and really made my holiday.
Stefan is also a supernice guy, very friendly and laid back. I definitely recommend this room!