The apartment in general was fine, clean and quiet cozy, most of all we liked the location. The main disadvantage for us was that only 1 key was provided, although the apartment is supposed to accommodate up to 5 people, and we were 3. Also we needed to wait by check-in, because the cleaning was not finished in time. The property has very strict check-in and check-out rules, the guests are not allowed to come or leave even 10 minutes later (will cost a lot of money, although most of other properties I stayed in were way more flexible). Taking this into account, we didn't like wasting time waiting for the apartment to be cleaned: if you impose such strict timelines, you should also follow it yourself.
But overall, quite a good option for staying in Paris.