We had a really great stay at Christian’s apartment. The apartment was super clean and tidy, with a well-equipped kitchen and spacious bedroom. Christian was very friendly and welcoming. The location is pretty good; extremely quiet, two tram lines passing close by, and some supermarkets around the corner. The only downside is it's perhaps not in the heart of Prenzlauer Berg. Would certainly love to stay at Christian’s next time I'm in Berlin.