Overall our stay was alright - the location of the apartment is perfect, right in the heart of the city.
Check-in was easy as well, we collected the keys from a key safe.
The apartment itself is pretty small, the mezzanine is super low, you have to crawl in to get into bed. Furthermore it is in the ground floor, you can hardly sleep with an open window, and even so it is pretty clairaudient.
The bathroom is really spacious, unfortunately the sliding door doesn't close properly (so absolutely no privacy), the shower door is pretty hard to open, the shelf pretty shaky.
Furthermore the seems to be a problem with the electricity, the hot water tank didn't work one day because of a popped fuse. We could easily fix that (communication was quick and easy) , but had to do the same thing again the next day.
Overall the cleanliness is just alright - if you look close, you realize nobody ever dusts the place or cleans the cupboards. Furthermore there were only two coffe cups, one of them cracked, and the dustbins lid is broken.
I do have to agree with everybody who says, the place is too expensive for what it is.