The location is ideal. It is within walking distance of various tourist attractions in Paris and has good bus and metro access. Because of such the location, there was outside noise in the room at night. However, it wasn't as loud as I had anticipated. It doesn't seem to be a problem with sleeping.
The bedrooms and bathrooms have heating systems so that they are not cold. But I could not find the one in the living room, so it will be cold during the winter.
The rooms are spacious and comfortable despite being in the center of Paris. Since the refrigerator is small for the size of the room, it is best to stay only for a short period of time or to eat out. The bathtub cannot hold enough hot water due to the tank size. But this is normal in Paris. Even heavy suitcases won't be a problem since there is an elevator.
The staying was very enjoyable. Thank you again.