It was a bad experience as we could not sleep due to a broken water system in the toilet which was next to the bed and was very very loud all night long. We always felt as if we had to beg for assistance. Staff was not very helpful - they made us feel as if this was our problem and one lady told us that we should leave if we want (during fashion week in paris there is no chance to get another airbnb).
The worst was that we could not sleep with a newborn for four nights and the sounds of the toilet went off on the third day only when they finally semi fixed it. Anyhow we had to put water on in the toilet to be able to flush which is very unhygienic.
They offered to refund us a little bit for the inconvenience but we then never heard back from them. We travel a lot and never had such a bad experience.