Penthouse on the 5th floor (with elevator). There is a Balcony with direct sunlight all day long and a roof terrace with grate views of Berlin. Even though it is very central you would find it quiet a nice (we are at the second backyard).
The flat is near lines of Tram, Bus, U-Bhan and S-Bahn. Just 15 minutes walk from the East Side Gallery and 5 minutes from Frankfurter Tor. The neighborhood is full of nice restaurants, boutiques, supermarkets, and all you need for a great stay in Berlin