The worst experience ever. I should say first, the apartment itself is okay, it's in a good location, quite spacious, equipped with a washing machine and cooking appliance which is good if you want to stay over a couple of days. The managing team is also very responsive and available until late hours. However, there was a number of things, which completely ruined our experience.

After the apartment was confirmed, we were notified the keys should be picked up from a different location. If we wanted the managing team to meet us at the apartment, we were offered to pay 10 euros extra.
Right after we picked up the keys, we were informed there had been issues with a/c and the technicians would come the day after to fix it. The day after the technicians came and did not fix anything. The next time they could come was 4 days later, so we stayed without proper heating for 5 out of 6 days and it was in January.
As it was quite cold inside, we decided to use extra blankets. However, the additional blankets did not have any covers and had some huge crimson stains, obviously from spilled wine.
On day 3, Wi-Fi stopped working. We were given credentials for another network, however, the signal was so weak that it did not work in the bedroom, Wi-Fi was only available in the leaving room in the spots close to the main door. The issue was not fixed.
There were some minor but very frustrating things like only one teacup, no hangers in the wardrobe, dirty kitchen towel. The teacup and hangers were provided by the managing team later.
The biggest issue happened right before we left. On day 5, the technicians came to fix the a/c. When we returned to the apartment we found two technicians only without anyone from the managing team accompanying them, although we were promised otherwise. As it was our last day, we were packing the stuff that evening and realized that the USB MacBook adaptor was gone. We literally turned everything in the apartment upside down, checked even the trash bin, but did not find the adapter. I don’t want to make any claims, just want to ascertain the fact that before the technicians’ visit the adapter was in the apartment, after their visit the adapter was gone. I informed the managing team about the situation and they offered to open the dispute and have Airbnb involved, which I have done and currently have this issue looked after by Airbnb.