A great flat for young people or short stays, but it has a couple of issues we struggled with. The flat was clean, spacious and generally well equipped. Gregor and his team were very friendly and easy to contact as they have an office in the same building. The flat is situated in a courtyard and well protected from road noise, with very considerate neighbours. The U bahn is across the road and very well connected to the rest of Berlin. The area felt safe, with many cafes and restaurants nearby.
However, the area is run down. Graffiti, discarded household items by the roadside, homeless people living under the rail bridge and drug dealers operating all day. The flat has "block heating", so it didn't come on until October and went off at 10pm, we had to buy an electric heater to avoid being cold during these times. The internet is an off-shoot from Gregor's office. This meant restricted access to streaming and game sites, and a low bandwidth which caused the connection to collapse. Finally, the basement ceiling is very low, with protective foam to cushion your head when you bang it. Which I did every day.