Overall this is a very nice and spacious apartment. The location is quiet but also close to the city center, the view from the balcony is wonderful and the bed is comfortable. The bathroom is really big and the water pressure is good. The self-check-in worked perfectly.
The communication was a bit impersonal, but you get all information you need and the response time is short. The only negative aspect: We asked for a later check-out time (just 1.5 hours). But eventhough the apartment wasn't booked the next two days, it wasn't possible. This is because they want to sell the luggage storage in their office or hotel. More flexibility would be nice.
Nevertheless: I would stay here again.