We visited Paris from USA to celebrate a birthday and an anniversary. Our family of 5 adults stayed in this apartment for five days. We loved the apartment as well as Mariam. She is very warm and helpful, and took immediate action on any issues that we raised. Paris had a really hot week when we were there (100 degrees F). Mariam arranged for a fan beforehand, and we were also able to check in early.
The apartment is well located being so close to the Passy Metro (from where you can see the Eiffel Tower) and also with the nice Passy Market in walking distance and the MonoPrix supermarket which has all that you need. The kitchen is well stocked with cutlery and cooking utensils etc. so we were able to have several breakfasts/ brunches/ late night snacks in the apartment. We tried an Italian restaurant near the square on the way to the Passy metro, and it is very good. Other places also looked good.
The high ceilings in the apartment made the heat bearable, although on one day when it was really humid, it was hard to sleep. It would have been nice to have at least one more fan (right now there is only one). The beds are quite comfortable. The small elevator was also very helpful in bringing up the luggage as well as coming up 4 floors instead of having to climb. We used the washer, and it worked great. We dried the clothes on a drying rack in the apartment. We did not want to use the electric dryer as it would make the apartment hotter.
The only negative about the apartment is that the second bathroom is really very small. While you can take a bath there, you have to be careful, as otherwise water comes into the bedroom. Also there is no sink in the bathroom. So we ended up using the main bathroom which is very nice. For a smaller family this apartment would be perfect. So overall, we would have given a five star to this apartment, but due to the smaller second bathroom and not enough fans we would give a 4 star.