We had a very good experience with the host and the apartment itself - everything was clean and modern, and Joy and her team always responded within minutes when we had a question about something.
However, we did not like the location that the apartment is in. The street that the apartment is on was extremely crowded and noisy with A LOT of people talking loudly, standing/walking around the apartment building, loud music playing, and just general chaos. The area itself looks dirty and run down, definitely not your typical Parisian charm. I came with my fiancée and even together walking down the street did not feel very safe in the dark. Walking 5-10 mins you will get to a nicer area with a lot of restaurants/coffee shops nearby, but this street in particular was sketchy.
Another problem we had was loud neighbors in the apartment corridor. They always had parties going on until late at night and it did not let us sleep very well.