Everything worked well, from checking, communication to living in the apartment, which presented itself exactly as it was described here.
The air conditioning worked wonders, and I wasn't aware that you would actually want it in sommer. There was at least one window that didn't close perfectly, which at least in summer was a good thing, providing some fresh air constantly without ever being annoying.
However, that also means that noise from the outside would pass through unfiltered, which meant I would usually wake up sometime at night when the trash was picked up.