This is a fairly spacious, secured and quiet accommodation in a very nice area of Paris (close to attractions such as Notre Dame, the Pantheon, many universities, restaurants, etc.). Despite the major issues I had with the cleaning of the apartment (see below) things went quite well. Check-in went well. While I never heard a word from Marie, the host, she uses a sitter service that takes care of managing the rental. The sitter was very nice and responsive.
The main issue I had was that cleaning wasn't done at the time of my arrival (3PM) and the state of the accommodation was quite terrible. From food on the floor, old food left in the microwave, cigarette butt on the bedroom floor, large stains (blood?) on the bedsheets, dirty towels on the floor, overflowing garbages including what looked like tampons that had blood dripping inside the bathroom garbage, I can't recall seeing such a dirty apartment, even in my student's life. Several messages to the host and sitter and hours later, the cleaning person came and was done around 6PM. The place was much cleaner, although way far from being clean (it was a very high level cleaning), leaving a garbage full, not cleaning the microwave, and with dust and garbage under the bed, behind, most furniture, etc. This impacted my stay as I only had this half day to go around and visit the area (coming for work the other days). I guess this can happen, and the sitter worked on solving my issue, but the fact is that I did not get what I paid for and had no offer of compensation. Generally, I would not recommend staying there for this reason and will be careful now to use AirBnB for work trips. I will also add that the AirBnB Customer service turned out being useless on this...