I had a really good stay. The apartment was 5-star-clean and everything was as expected. Had no problems finding the keys, the checkin and out were autonomous and the flat was comfy and bright. There is a bit of noise from the street but it was mentioned in the flat description and I didn't find it too disturbing since there are 2-glass-layer-windows.
If I had to add a comment for improvement it'll be that one of the window blinds was broken so a lot of the sunlight came in in the morning. I'll definitely book the apartment again!