This place was very convenient and had everything we needed for a great stay. It was very close to two public transit stops and within walking distance of most of the things we wanted to see in Berlin. There are restaurants and grocery stores very close by. The person who met us was lovely and through in showing us around.
The responses were amazingly quick. We had a problem with the entrance key at one point and someone was there to help within less than five minutes. We blew a fuse on the microwave and help was there within five minutes. The entrance way is a bit stark, but the apartment is updated and really bright, with wall to wall windows in all of the rooms.
The elevator does not stop on every floor, so there is one floor to walk up.