I've experienced the worst time of my life in an AirBnb apartment: it was located in the basement and it wasn't clear in the description so I didn't know when I booked it. There was a terrible musty stench all over the house that lasted for the whole period and still didn't go away. The shower drain was obstructed so the water didn't flow.
The good things were the silence, the linen tidiness and the restoration of the wall paintings and forniture.
Anyway I'll never come back there