This is a tiny space; 'a bit like a bank vault with a window.
It has everything you need, which is wonderful. The host is very kind and speaks English quite well. If you are at all claustrophobic, this will not be the place for you.
The tiny space is perfumed with several chemical fresheners that challenged my breathing and the courtyard on which the window opens has the usual French challenges of multiple smokers, day and night.
If you are on a budget, this may be a good place. The location is a pleasant 15min walk from the Eiffel Tower in one direction and from a beautiful neighborhood with good groceries, food shops, and markets in the other direction.
I fear I offended the host by departing a night early and requesting a refund for a night. I just couldn't breathe...