Great location near Tempelhof field. Lots of good restaurants and subway nearby. Some chocolates and wine at check-in were a nice touch.
Space is accurately shown in the pictures (two separate bedrooms). Not super big, but sufficient for 3-4 people to stay for a short visit. Note that there's no dedicated living room, but an integrated small kitchen in one of the bedrooms.
Restroom and shower are in separate (though each very small) rooms. All in all, very reasonable.
We would have given 4-5 stars, but we had two issues:
(1) The shower was not draining properly, which isn't great when you're traveling with multiple people. We contacted the host, but they only said they'll have to check and then nothing happened for two days.
(2) The faucet in the restroom was leaking and spilling water on the floor through the cabinet below the sink. We let the host know and asked for somebody to look into it, but we still didn't get a reply (3 days after checking out already).
The listing could also be improved by having check-in and check-out instructions on the page, rather than just saying to contact the host (esp. if the host is non-responsive). That said, our own check-in went smoothly (just didn't feel efficient).