We stayed in Jekaterina and Reuben's flat over New Year, and had a very good experience. There was no key handover, but the instructions were easy to follow to get into the flat. We found the apartment to be nice and warm despite the cold weather outside, and equipped with a decent kitchen (NB no microwave) and bathroom, so fine for a short stay. It is located close to two U-Bahn stops which take you into the city centre and also quickly to the airport shuttle for Schönefeld airport. There are lots of fast food places nearby and a couple of small supermarkets, so convenient for picking up a snack – although a decent pizza and anything not fast foody was a bit difficult to come by! Overall a positive experience, and fairly economical considering the time of year we visited.