We used this unusual flat with five friends. It is a large flat with three bedrooms, each with its own bathroom. They are also rented separately, which is why they are opened via key cards, just like in a hotel. So there is a key card for each room - you should not forget it in the room :-)
There is a large kitchen with a balcony and a large terrace. Croissants, yoghurt and coffee capsules are provided in the kitchen every morning. What we found irritating were the three cameras to watch the "communal areas" kitchen, terrace and the (unfortunately difficult to use together) "common room".
The flat was very clean - and the furnishings also appear very "clean". A staff member came daily to check on things.
We found the mattresses to be excellent.
The train station and historic centre are within walking distance.
The check-in was done remotely. A short phone call, then the house and flat doors opened as if by magic.