I visited Berlin with my boyfriend on the New Year holidays and we were stayed at Christine's. We really enjoyed it! House is located very comfortably. Food shops, snack bars, few restaraunts, U-bahn and everything you need are really close to the apartment. You don't need to use taxi from airport, just a few bus stops and then straight on the U-bahn to the station, where Christine's apartment is situated, without any transfers. The apartment, which is amazingly beautiful and spacious, is located in the very beautiful house, on the 3rd floor. We were making ourselves at home there from the first minutes we entered it. There are everything you need to live comfortably. I am verry happy and satisfied that we stayed exactly at Christine's!