Everyone was extremely helpful, from check-in, through our monthly stay, and when we checked out. The apartment was as advertised and we had no issues.
We liked that the apartment was just across the street from Notre Dame. It is truly in the heart of the City and we were able to walk to the Louvre and pretty much every place else we wanted to. The Metro is nearby. We really liked the Italian restaurant outside our front door and ended up developing friendships with the people there.
We noticed in other reviews comments about the noise. Yes, it is noisy all hours of the day and night. We came prepared for the noise so it wasn't an issue. If all seven of us can handle it for a month, you'll probably be able to handle it, too.
If you want to be in the heart of Paris, and in the heart of activity, this is definitely the place for you!