The room was spacious, clean and as described. However, the heaters were running on full power with outside temperatures around 28 degrees without any apparent way to turn them off which kept the room constantly strongly overheated and forced to leave the windows open also at night.
The checkin worked fine. I arrived at the checkin 10 minutes after 8pm after a delayed transport and made a huge effort to come to the checkin point as quickly as possible. Although extra fees for checkin after 8pm are explained in the description, it does not feel very welcoming to be charged 20€ for 10 minutes of delay at the reception after rushing there.
While all rules and prohibitions were explained at checkin, I had to explicitly ask for basic things like the location of the apartment. It is evident that this is a cold business rather than a welcoming stay in a private apartment.
Overall, the description on the website is accurate.