We stayed with my friend at Christian's apartment for the New Year's holidays. The apartment was exactly as expected and described. Although we did not have the chance to meet with Christian, our communication was excellent.
The location is excellent, very close to U station (1 minute walk), a tram station almost outside the front door and with amenities like super markets in a walking distance.
We did not had any problems at all during our stay, and although the weather conditions the apt was warm and there was hot water whenever we needed it. We did not use cable etc as the wifi was just enough for the time spent in the apartment.
The neighbourhood is quiet, with almost no noise (which for me is important especially during sleep time).
Definately I would suggest this to others and Christian is an excellent host with a nice urban place which will make you feel you are his guest and not a tourist.
Maybe next time we will have the chance to meet in person!