The room (14m2, 1,60m bed) is located in my flat at the 7th and last floor of a building from the 30's, but the entrance is independent. It's quiet and clean and the view is wide, you can even see the top of the Eiffel tower especially when it sparkles at night.
There is a private little bathroom (with WC) next to the room. No access to the rest of the flat. There is a boiler in the room if you want to make tea (at disposal for free) or instant coffee.