Long story short: instead of enjoying our vacation, we wasted most of our vacation time dealing with issues with the apartment and worrying what would happen next.
The apartment itself is nice but located on a very noisy street and the noise insulation isn't great. The curtains are also not darkening the room good enough. Eventually we had to sleep in the living room during the whole duration of our stay.
The floor wasn't clean, very dusty and we suffered from allergies in the apartment. When we went outside the allergies were gone. Also, TV was not working and we asked a few times to get it fixed but they completely ignored all of our complaints.
They have customer service but is completely useless. We left many messages by email and called a dozen times, and barely got any answers. Most of the times the calls were disconnected. When they finally picked up, they just put us on hold and then hung up. They didn't have the courtesy to call back.
We even had to go to their office and waste some more of our vacation time since it was impossible to get a proper response or even reach them. Not that it did any good. We had to contact Airbnb support to force some sort of help from the customer service. When that finally happened, we received an unexpected notification one evening, completely out of the blue, that we are to move to a different apartment which was not better at all, without ever giving our consent. We tried contacting them to get some answers, but of course we had to wait until noon the next day to finally have someone call us back and sort this one out.
In the end, at the last day of our stay, we received a small discount which wasn't at all meaningful after this awful experience.