We (husband, wife, and 17-year old son) can't speak highly enough about OTA-Berlin and the apartment. OTA seems to be superbly managed, were friendly and clear, and went above and beyond to provide help to us as we sought to recover bags lost by the airline. The apartment was extremely comfortable, very spacious, and super clean. It is modern and pretty, with light colored wood floors and new furnishings. The fully equipped kitchen and bathroom were each huge, there is a lovely rooftop patio with a table and chairs and view, very pretty curtains (very efficient too, keeping it dark in the morning) in the bedroom. Our son appreciated his private room, and we all found the beds comfortable. Light and airy, and fans kept it cool. This was a penthouse apartment, reachable by elevator. The location was fantastic: a wide range of restaurants and coffee shops in a 10 block radius, an organic market down the street, an U-bahn 1 1/2 blocks away. For sightseeing, easy walking to Alexanderplatz and the broader attractive and historically interesting Prenzlauerberg neighborhood, and easy longer strolls to a wide range of Berlin sights and neighborhoods. We'd return to this location for a future Berlin visit, and gladly stay again at OTA.