I stayed in one of the flats for six days in august.
The building is located in a very quiet area with good access to the city and nearby shopping facilities (Lidl is recommended).
The fact that you could only get into the building itself and to the lift with the key made you feel very safe.
From nine o'clock in the morning until about nine o'clock in the evening, there was always someone sitting at the front table who was very helpful. Check-in as well as check-out were very easy and hassle-free.
The flats are adequate for a single person and are sufficient in size. I can imagine that the bed might be a bit cramped if you are travelling as a couple. The kitchen was easy to use and well equipped.
However, what is not available are basics, like salt or oil. I bought both myself and hope that those who came after me could still use them as well.
I had to wait a few minutes to get into my flat because they said someone was still cleaning it. In itself, no problem at all. I am happy to wait. But then I also expect it to be clean. The flat was generally quite dusty, even more so in corners where you don't necessarily look. That is a bit unpleasant. I also found it a pity that only two towels were provided and no tea towel. When I asked, I didn't get another towel until the end of my stay. The request for another dishwasher tablet, on the other hand, was quickly followed up.
The problem that I couldn't use my key to get into the flat on the first day was also solved in the evening. It took a few hours longer than expected, but it worked out in the end. Unfortunately, communication with the managers doesn't seem to be very easy.
However, my understanding stops at the fan, which didn't stop running during the first days and didn't let me sleep. Communication among the team doesn't seem to work, so that I had to describe the problem again several times a day and couldn't expect help from anyone. With such a disruptive problem, I expect more.