This is a great old property, very clean and extremely well equipped. It is handy for Prenzlauer Berg and Weißensee and is in a street which is very quiet at weekends and after close of business. The flat is also close to local supermarkets, cafes, bakeries and tram/bus stops (download the BVG app before you arrive, it's the easiest way to get tickets for public transport). Peer responds to queries promptly and was helpful when we asked for slightly earlier access. Check-in and communication were easy. The kitchen is wonderful. The bathroom is lovely too, but it is the only one; perhaps one day there will be an extra WC under the stairs?
All in all, a great place to stay if you want to be slightly further from the noise of central Berlin.