The apartment was very clean and had everything you might need to enjoy Paris for a few days. The shower was one of the more spacious showers I've had in the many Parisian apartments that I've rented.
The location could not have been better, with Rue Mouffetard being one block away.
Rosa was extremely responsive and very kind. There was a heat wave coming through Paris during our stay and while the apartment has a nice big window you can open to catch a breeze, it was still quit hot. Rosa went out and purchased us a fan to help cool things off, which was VERY much appreciated.
The apartment is quite small and we had some trouble figuring out where to put our luggage so that we could still walk around the room. That said, assuming you aren't coming to Paris to sit in your flat the entire time, there should be enough room.
Overall we enjoyed the apartment very much!