This was the worst Airbnb experience my partner and I have ever had. Completely unacceptable.
There was a major water leak in the building that started several weeks before we arrived and had not been appropriately addressed. The temporary solution implemented was for the top floor - the source of the leak - to turn off their water main. The top floor main was turned back on the day we arrived as the residents had returned from holidays, and we spent our first evening in Paris catching water leaking from the kitchen ceiling, walls and even light fittings in buckets. That’s not an exaggeration. We basically saved this apartment from serious water damage, which was not acknowledged or appreciated by the host at all.
When we asked whether she was aware of the leak, the host said she was not - only later to admit that this was false. There were signs all through the building, and evidence of previous damage in the apartment.
The host did nothing to rectify the situation, other than agreeing that we needed to move out immediately.
There were long delays in her communication, and she failed to issue an immediate refund for our stay. We had to remind her to do so a week later, and even then she only issued a partial refund, leaving us to manage the remainder with Airbnb directly. She did not apologise for this, or attempt to assist in any way.
We are upset about this experience and consider it to be in breach of multiple Airbnb hosting standards.