There are several great features about this apartment. First, Marie is a great host. She is kind and wants you to have a great time during your stay. She is glad to help you whenever she can.
Second, is the location. It's in the center of Paris and steps away from the metro. However, please be aware that there are no elevators and you will have to carry your luggage up several floors to reach Marie's apartment. Also, the lighting is dim in the corridors at night.
Third, the apartment is very clean, modern and comfortable. Although, it's a bit small if you are bringing lots of luggage, Marie has organized storage to maximize the space.