I can only rate this accommodation with two stars. One for the clear check-in instructions and friendly communication with our hosts and one for the rather good location.
The whole building but especially the apartment is in very bad condition. Not even basic maintenance seems to get done. To only list a few shortcomings: There is lots of mold in the grouting of the generally dirty bathroom facilities. Toilet seats are broken, furniture is overly worn, floors are dirty. The walls are as thin as paper. You can hear peope doing their business in the bathrooms in the whole appartment. Rooms are only heated on demand which seems to be the main cause for the mold in the bathrooms.
Also, when we booked, we expected the accomodation to be a single room apartment that we'd have for our own. We didn't know we'd share the apartment with multiple other guests.
It's definetly not worth the insanely high price.