We stayed for around two weeks in this apartment. The entry to the apartment is actually directly on the street-front, so we had to be careful to keep the door closed and at times could hear noise from passers-by on the street.
The apartment is about a ten minute walk from Sonnenallee and five minutes to several buses.
The apartment was generally clean and well maintained, however, we had issues with the water heating for the entirety of our stay, and were unable to have warm showers. Luckily the shower sits over a bath, so we could have baths - but with four to five people this became frustrating. Stephan made efforts to contact plumbers to fix the issue but, despite them coming to the apartment several times, they were unable to fix it before we left. We had some difficulties in communicating with Stephan about a refund in this regard, who was not receptive to working out a price between us, and eventually were refunded an amount that we had not agreed on.