The situation of the appartment is really good. Not far from the Alexander platz by Strassenbahn (less than 10 minutes). A supermarket and a bakerei just near the appartment, a train station and U Bahn station at 2 minutes. In a few minutes walk you're in the nice area of Prenzlauer berg with some good restaurants.
The appartment was clean, big enough for 3 persons and really comfortable.
We really enjoyed our stay and we recommend this flat if you want to discover Berlin :)