I am 31 years old and work as a researcher in computer science/neuroscience at the Technische Universität Berlin.
Stefan was a real cool host. The flat was really tidied up and there was enough place for me and my girlfriens clothings and the other stuff we brought to Berlin.
We've had a 7 week stay and it was very pleasant. The environement of Friedrichshain was inspiring and full of the allday-chaos that i like sometimes. If i want enjoy the calmness of nature the Rummelsburger See wasn't far away.
There were no problems with the formal aspects of the rent and i'm really glad to have booked the stay with the help of airbnb.
I can recommend Stefan and his flat for everybody who wants to feel a creative and eclectic spirit in Berlin.
We were also happy to serve him. Mr. Stefan Haufe was calm and very gentle. On checking-out date, We were about to ask him to take a picture of him or together . (he has lovely blue eyes. ;) ) Unfortunately, he left early without saying "good bye". Anyway he was one of great guests in our guest house.
Stefan is great guest to have! It was fun experience meeting him :-)