We loved staying at Kristian's flat. There was room for my daughter (14) in the bedroom, and me sleeping on the red couch in the picture. I was nervous about the couch, but actually it was fine - large (and I am a big person) and comfortable. The apartment itself had everything we needed, and was part of our wonderful Berlin experience - high ceilings, double doors, wooden floors - delightful. Its location was very good, too, and close both to U-Bahn and tram, although, depending on your fitness, you can walk to Alexanderplatz S-Bahn, in a good 10 minutes. We save our energy. Getting into the flat was easily handled, by Leonore, and although we didn't meet Kristian, he was helpful and prompt by email, with good advice on getting to the flat from the airport. I would return, and will recommend to friends and family.