The location is quite beautiful (only two city squares from the Grunewald Sbahn station, with lots of trees and greenery around).
If you like quiet, I think that you will enjoy it.
The apartment and WC were extremely clean. The room was functional and provided all the needed amenities for a single traveller.
The host was very kind and courteous, trying to help with travelling via the Sbahn.
Since I was away all day for the Innotrans exhibition, I didn't have enough time to explore the neighbourhood, but it was quite beautiful.