Katrin's flatmate, Norbert, gave me the keys of the flat, he also helped me with printing some documents that I needed.
The house is like in the picture, big and clean and there was space for my stuff even in the bathroom.
In the street there are a lot for restaurants and take-aways and a couple of minimarket to buy things that I needed. The asian food place that you see from the room was too inviting to not try - and really nice. Just one thing, and it's not the host's fault of course, in the weekend people will stay in the street until late so there may be some noise.