We had a nice stay and the apartment was as expected from seeing the pictures.
On the plus side:
Big and spacious for our family with three kids / Although on a busy street the apartment was quiet and peaceful / The kitchen was very well equipped.
On the minus side:
A bit cold in the autumn weather, could imagine it even worse in winter so remember warm socks! / The (sofa)beds were a bit uncomfortable / the warm water in the shower was a bit unstable - just enough for a short shower.
But all in all a good apartment with good location right by the u-bahn.