The location of this apartment is excellent. It is within walking distance of many major attractions and very close to two metro stations and 3 different metro lines. There are several grocery stores within easy walking distance (We used the Monoprix), and many good restaurants nearby. It is two flights of stairs up, and has a elevator.
This apartment is very comfortable and easy to live in. It is charming - well decorated and nicely furnished. It is better than described - the fact that the bedroom and sitting room are separate, with doors, means that one person can sleep while another can be up and active. The washroom is very modern (with towel warmer!) and the shower is excellent, with lots of hot water. The kitchen has everything necessary for light meals. There is a clothes washing machine for extended stays.
Although we did hear neighbours in adjacent apartments, they did not bother us at all. There was some construction nearby that was bit noisy during the day, but the apartment was very quiet at night, and we had no problems sleeping. We were there in October, and temperatures in the apartment were very comfortable.
If I am in Paris again I would not hesitate to stay in this apartment.