Norbert's place was very tidy and comfortable. Norbert would reply quickly to all of our inquiries, and was accommodating and cordial. We have just moved to Germany and he helped us a lot with administrative steps too.
Being Argentineans and used to much closer interactions, perhaps we would have liked to get to know him a little better, since ours was a longer stay (almost a month). But then again, this could be just cultural differences, and he was always very respectful towards us.
We had to change the reservation because we got COVID, and Norbert was very patient and helpful.
The room and the common areas were very well equiped, and we always found everything we needed.