The apartment is in a superb location, very close to the metro station, close to supermarkets, bakery and restaurants. The apartment was clean, light and warm, and well stocked.
Alan and Kasia weren't on the city during our stay, but they sent a friend to take care of everything for us, and kept contacting us until we got there to be sure we were ok.
When I get back to Berlin, I will surely contact them again!