My boyfriend and I stayed at Alex's place for 3 nights and really enjoyed our stay. The apartment is beautiful and there are many great sights to see on foot close to the apartment and those that are further away are easily reached by metro stops that are also within walking distance. The room was very spacious and clean and Alex let us use the kitchen and washer as well. She was a great host who gave us lots of information about what to see and how to get around Berlin, she made us feel very comfortable at her place. I would highly recommend staying here on your visit to Berlin!