We had a wonderful stay here. The location is fantastic. 5 minutes to the Ostkreuz station which is on the S-bahn ring around Berlin. Plenty of small restaurants and breakfast places just around the corner. You're in Friedrichshain which is the new hipster hotspot in Berlin. And at night there's 2 tram lines nearby that can get you home from anywhere in Berlin.
The appartment is very spacious with a cosy living room, a well equipped kitchen and a large master bedroom. Bathroom is a bit small but nothing to worry about. The neighbours are friendly young people. The building is a bit old and the walls are a bit thin but apart from an occasional yell in the neighbour's apartment we didn't notice it.