We stayed 4 nights at Julian's apartment (two adults and a three years old), and to sum it up it was a good stay. It's on street level, but it's a quiet little street and the bedroom is at the back, so it was quiet. However if you are more than two and planning using the sofa bed in the leaving room – I suggest earplugs just in case. Other than that, it was clean, spacious, good shower, very close to U5 station (3 stops to Alexanderplatz). A nearby supermarket (Edeka) and three very good restaurants (Blockhouse, Tia Maria and Rembrandt Burger). The communication with Julian was very good before and during our stay. Altogether a fine place to stay in.