I stayed at Reuben and Jekaterina's place for one month. The apartment itself is great. It is comfortable and has nice aesthetics. The balcony was good to take in some sun on nicer days. The area has plenty of nearby restaurants and is only a couple minute walk from Tempelhof park. The subway is also a few minutes away and takes about 15 minutes to get to Alexanderplatz, one of many areas of interest in Berlin. When minor issues arise, as they often do with longer stays, Reuben was extremely responsive and even used skype to clarify some things. I would recommend this place to friends and I would stay there again in Berlin.