solo december trip. used the metro system from cdg to arc de triomphe and then a few min walk from there.
the small room on the top floor was as described. fair price and practical in a nice quiet location.
the shared toilet for the floor was pretty clean. paris was cold when i visited but the room temp wasn't too bad with the portable electric heater set to low at nights.
this room makes the most sense if mainly used by one person to crash at night. worked out great for me as i was out every day.
we had some initial time miscommunication to meet and get the key. owner is nice and all worked out. when you get there first, if you don't have a local sim card to stay connected, there's a McDonalds not too far with free wifi to at least read/send messages, and maybe grab a quick bite. of course, after check-in you get free wifi with your room.
would book again.