We stayed in Julia's apartment for our honeymoon and really had fantastic time. First of all, location is perfect! Berlin is crowded, little bit noisy for a european city but Prenzlauer Berg is very calm, has lovely cafes and restaurants around. Really, there is no better place to stay. It is also very close to tram and bus stations. We walked min 8 or 9 km per day, but when we come back home, we really felt it was our home. Also we really felt very secure because Julia was staying down stairs. Whenever i asked a question, she immediately answered it. Thanks a lot again Julia. do not waste time and stay here :)