Unfortunately, this was not a pleasant stay for me. I have been a content AirBNB user for many years and this is the first time I write a negative review.
When I returned to the apartment on the first night, the key remained stuck in the front door after I opened it, which made it impossible to properly close the front door. I had to sleep with the front door unlocked. I tried to reach the host, Rosine, but Rosine uses an agency, "Bnbsitter", to manage the apartment. Unfortunately the office of this agency Bnbsitter only opened at 10am the next morning, and after that it still took them 11 hours (!) to find a locksmith who could fix the key. As a result, I had to first wait in the apartment for three hours, then leave with all my valuables, and I could not use the apartment for the entire day, until 9pm that evening. In addition to how slow the agency acted, they were also impossible to communicate with: they kept making promises they didn't keep, they were rude and accusatory to me on the phone ("it wasn't broken yesterday", as if the broken lock was somehow my fault), and they told me they had trouble finding a locksmith in Paris on Sunday - clearly a lie, as a simple Google search "locksmith Paris Sunday" will reveal. As a result, I was forced to spend most of my Sunday off in Paris calling Bnbsitter to make sure they were doing something about it.
I did not receive any communication from Rosine herself until after my stay was over. Then she apologized but she was not forthcoming with offering reimbursement. She only offered me a small amount at first, and I had to ask so that she finally agreed to reimburse just the one night I had to sleep with the door unlocked.
I would not stay here again, or in any other apartment managed by an agency. I am left with the feeling that I was not really a guest but just an annoying customer. I recommend that any potential future renters check that the actual host is available during their stay, because in case unforeseen problems arise, the agency Bnbsitter is slow, incompetent, and very unpleasant to communicate with.