We had a pleasant stay in Paris. This is a family home rented out for the holidays, an attractive apartment in a nice area, with a parking space. The owners like complicated gadgets with lots of buttons. The coffee machine was a thing of beauty. We had problems working, or even identifying, some of the other applicances. We didn't find the bottle opener until the third day. It is the thing which looks like a kidney dialysis unit.
There were two things I was not happy with. Firstly, Virginie required a 1000 euro deposit, outside AirBNB, which she would keep if she decided we had made too much noise and upset the neighbours. (It was returned.)
Secondly, she told us two days before our trip that there was a 40 euro per night surcharge for using the third bedroom, in cash, outside AirBNB. There had been no mention of this at the time of booking. It says something about it in the listing, but gives no amount.
Both of these are clearly against AirBNB rules, which Virginie signed up to when she became an AirBNB host; these forbid security deposits but allow AirBNB to charge guests for breakages, and say that all charges must be specified at the time of booking, and all money should change hands via AirBNB. It became obvious that Virginie knew this, but did not care.
I think the AirBNB rules are very well designed. They strike a balance between the interests of hosts and of guests, and they allow two strangers to trust each other -- provided they are followed. In this case, they did not work. I did not feel I could trust Virginie. I would not book with her again.