In the center, near the subway and cafes and restaurants, many bars around, recently renovated, everything is new, good modern design.
The room is small, it is difficult to get into the shower cabin, the closet for clothes is very narrow, so I have no idea how to fit 2 people's clothes in winter. I would say that the hotel is suitable for short visits.
You could hear a bit of the subway, which is somewhere deeper under the building.
But this is Paris...