Katrin has arranged a way for us to do a contactless check in and check out (very useful key deposit which allows groups to have more flexibility and not all have to go home together at the same time). The communication with her before and during the stay was also perfect, fast and clear answers!
The apartment itself is great, big and comfortable. There is only one shower, which for big groups may be complicated, other than that everything was to our expectations, we had a great stay =).