First, anyone interested in renting this place should pay close attention to the "house rules," where it says that utilities costs are not included, which in my experience is unusual for Airbnb, and given the high energy costs these days would make it tremendously more expensive than the listed price.
Second, this apartment is very old and worn, and the photographs show it in a much better light than reality offers upon walking into it. It appears minimalist but cosy in the photos, but it's really rather unpleasant, with rickety furniture and just the bare minimum of amenities. There's no rug, the futon is very worn with some small holes in the covering, and the furnishing and decoration is somewhat more sparse than pictured. When I came in, the radiators were covered with dust and stains, the kitchen counter had dirt caked between the tiles, and it was clear that while it had been cleaned at some point, the cleaning was not very thorough (I found a couple of leaves under the cupboard). There was a long, gross drip of some brown liquid running down one of the bedroom walls and down to the floor, and dirt caked on the sides of the dining table -- just to name a couple more problems -- that nobody had bothered cleaning. Please note that even if it is cleaned better next time, other discomforts include a shower with very weak pressure, a bathroom sink that gets easily clogged, and kitchen drawers that stick together when they open: things that are all small on their own but, put together, indicate an insistently bad level of upkeep for an apartment that could be not bad (especially considering its great location) if it were maintained properly.
When I ask for a clean-up upon arrival, Diane sent a cleaning guy who was extremely angry at my request to have the place cleaned again, and argued with me when I showed him the parts that needed cleaning. He claimed the apartment was just old, not dirty, yet he still managed to get the supposedly impossible to clean stuff off the kitchen counter without a great effort. He warned me that I better keep the place just as clean, or else I would pay extra! He was so belligerent that I told him to leave before he finished cleaning, and I decided to leave the place as soon as I could find another arrangement for my long-term stay in Paris. The only sliver lining was that Diane was understanding of my decision to leave early, and facilitated the reimbursement of the cost for the nights I didn't end up staying in the place.
Upon leaving after 11 days, I ended up having to pay about €81 extra for utilities, which I was surprised at because upon check-in I had not been informed of how to keep track of the heating costs: I was told only upon my check-out that it should have been explained to me at the beginning, which didn't do me much good at that point. I don't know how they did their calculations to determine this price, but I paid it without arguing much because I was in a rush to leave.
So, no, I would not recommend this apartment to anyone, and I can't particularly recommend that anyone deal with this host and her management company. Diane was courteous enough on the phone when I complained to her about the situation, but the whole operation is in my opinion not very professionally run.