Very spacious and bright. Clean with perfectly fine beds. Got all the info I needed to get in well in advance, so no issue with communication whatsoever. All in you get your money's worth and all ten of us were happy with our stay.
The reasons I am not rating this a five star experience is mainly for two reasons. The first is that the place is a little bare-bones, made for staying the night and little else. E.g. the amount of cutlery makes it difficult for everyone to eat at the same time, which was primarily an issue around breakfast since most of us wanted to eat cereal. Similarly you had to use a mixed set of mugs if everyone wanted coffee/tea at the same time. But as I am sure you can imagine, this is not really that big a deal.
Issue number two is (mostly) no fault of the owner's. The issue is that the apartment is so central that there is noise throughout most of the night and then early in the morning. The proximity to the nearby restaurant means people are making noise just below your bedroom window late into the night. Then the garbage truck shows up early in the morning to collect trash and you wake up to the rhythmic beeping of a reversing truck and the sound of the glass recycling being emptied. Depending on how much of a sound sleeper you are this could bother you more or less, but the place could certainly benefit from better windows that keep sound out.
With more sound-proof windows this would absolutely have been a five-star stay.