I stayed at B's house for about 2 weeks and it was a great experience. B is a very accommodating host, she is incredibly knowledgeable about music - cool music - and she is very friendly and easy to get along; always up for a chat or to offer assistance. The room itself is large, spacious, sunny, clean, and comfortable. The apartment is located in lively P'Berg, which has an abundance of cafes, bars, and restaurants, and one can easily make the way to other parts of Berlin from there. I enjoyed my stay at B's.