I spent 3 months in Paris (mainly by myself) for an accounting internship. The location of this place is absolutely incredible. Especially for someone commuting to La Défense. The hosts were incredibly kind and welcoming. They replied promptly to any questions I had and were also quick to help with things that didn’t seem to work properly. If you are a female staying alone, I highly recommend this place. I never felt unsafe walking around the area. In addition, you can walk to many things such as the Eiffel Tower, Louve, and even the Arch de Triomphe. My only complaint was that the place did not feel clean when I arrived. The cabinets were filled with open food/junk and the floors were pretty dirty. In general, it would have been nice to have better towels and bed linens. I bought new towels, sheets, and deep cleaned the place, so it should be good to go for whomever comes after me. Overall, I would highly recommend this place especially if you don’t mind a little cleaning. The value is incredible and the location is even better.
As for the neighbors, everyone was so kind. You can hear everything through the walls, so if you chose to rent the place, please be respectful. Although I didn’t speak French, I still enjoyed my interactions with everyone in the building. Depending on the time you are there you will have to take care of the water and electricity meter. It is honestly no big deal and should not deter you from renting. It is only twice a year and you can simply write it on a piece of paper and put it on the door. You don’t have to give anyone the keys or let anyone in which would be a problem for some people (including myself).