I stayed here with my 13 year old son and we loved this apartment and the whole surrounding area.
Gerhard was extremely friendly and helpful and came to meet us off the airport train and sent me many good suggestions during our stay.
It was very warm while we were in Berlin but the apartment remained a nice temperature and we slept very well as the bed is very comfortable and the blinds on the windows helped as well. The apartment was clean and well equipped and had everything that we needed.
There are many restaurants and bars in the vicinity (but it is not a noisy area) and we had an excellent pizza at Luna around the corner from the apartment.
The nearest S bahn station was only a short walk away and there were a few bakeries and cafe's on the way there, where we could get breakfast every morning.
I would love to return and can highly recommend to anyone visiting Berlin!