This is a beautiful apartment. It's huge and well-appointed. A group of six of us met in Paris for nearly a week, and the apartment was in a great location. Metro and RER train stations are only a short walk away, making it easy to get to locations throughout the city. The neighborhood is nice. There are several grocery stores and markets nearby. It is very quiet in the evenings. Achraf was incredibly communicative and accessible. Great host.
The only thing I would note is the situation with the air conditioning in the apartment. Apparently be building runs on a "central fan" but it is weak, at best, if practically non-existent. We were there during very warms days in early July and it was easily 80+ degrees in the apartment in the evenings, making sleeping rather uncomfortable. This is likely not an issue 10 months out of the year, but if you're coming in the warmest months (July or August), it's worth being aware.