The big disappointment came the moment I entered the building and instead of a man there was a machine waiting. I said it didn't matter, I like modern things.
The machine wanted to enter the reservation number after me, but it still didn't work, I didn't know what to do, the others tried to do the same. I called the hotline, although I can't speak English very well, only after this call did I learn that there was a sign with instructions on the glass door. The gentleman on the line told me on the phone that I had to send a negative test first and then I would get a accommodation number from him. Firstly, it did not occur to me that the glass doors are instructions (it could be better visible), secondly, the information was written only in German, which is annoying when 90% of people can speak English and thirdly, when making a reservation I she could be informed by feedback about sending the test and thus I could save a lot of time and nerves. I thought I was going to sleep outside. At least 45 minutes passed before I searched for the accommodation card.
And when entering the hallway to the rooms, it could also be indicated that the card is attached to the handle, there was nowhere even a small hint. I recommend processing everything even more.