The appartment is a hotel residence and not a "classic" Airbnb. In practice it means you can have your room cleaned and your bed done daily. They also provide for shampoo, soap, towels, etc.
The appartment is really calm, whether or not the double-glazed windows are closed. I slept with the windows open without any problem.
The bathroom is quite spacious, the double bed, the desk and the wardrobe as well. However, the unoccupied space is relatively limited, just enough to do push-ups basically.
The hotplates and the heater were working well and the power outlets were well located so that the cable of my laptop wouldn't lie around.
I wasn't there as a tourist but Paris XV district ("arrondissement") is full of bars and restaurants. The Eiffel Tower is quite close to the appartment. However, Dupleix quarter is not the part of Paris that you would usually see on advertisements for Paris. It's nice but I believe it's neither the nicest nor the most famous part of Paris.
All-in-all great stay and great value for money!