Very nice flat for 4-6 people, with U-bahn right outside and nice restaurants just below the 1st floor flat and on the other side of the road. There was however quite a bit of noise from these places every evening. The flat is nicely decorated but the kitchen is worn (the drawer broke the first time we tried to pull it out) and it is really only suitable for doing breakfast. Which is fine if you want to go out for dinner every night. That wasn't our plan to start with.
Note that the U-bahn is on a line that connects to the main lines so expect a lot of changing trains.
We would stay there again, being aware of these things so we can plan differently. All in all, a very nice flat to stay in.