I stayed in Sonja's apartment for two weeks and I had the best experience! Sonja is a very interesting, helpful, tidy and nice person. When I felt a bit sick, she made tea and showed me her beautiful collection of dvd's I could watch. Her apartment is beautiful and well located, it's easy to go to other parts of Berlin with the tram or the U-bahn. I miss this place and I definitely recommend it to everyone!