Small clean studio apartment in a very good location, walkable to Gare du Nord and many sites and locations. During the strike this was very helpful since the Metro was not running. The room has a fold out couch for a third person, but it is very uncomfortable so would recommend it as a place for 2 people who can sleep in the bed.
The bathroom is large, clean and comfortable.
The stairs to the apartment are particularly narrow and steep. It would be difficult, and dangerous to carry large heavy luggage up and down especially for older travelers, small children or people who have more difficult climbing stairs.
Check in and communication with the host was extremely responsible, reliable and easy.