Pros:
Pictures and description are accurate.
Ledru-Rollin metro station is right outside.
Combo washer/dryer is convenient--but dryer takes a long time and you should only load halfway
All electric outlets have USB-A sockets
Monoprix across the street, and outdoor market five min walk away
Cons:
Street can be noisy at night, so if you're a light sleeper this may be a problem
Flat is up three flights of stairs which may be problematic for people with bad knees
Overall I felt the place was a great choice and I enjoyed my stay with one big caveat: we returned early one afternoon to find a handyman inside replacing burned out lights. The host did not inform us about this in advance or ask if it was okay. We had all our stuff laying around and I felt it a big intrusion on privacy. Our personal belongings were not moved and nothing was taken (including large amounts of cash left lying out on a table) but it still did not feel appropriate. If we hadn't come back when we did we would never have known it had happened. That made me wonder what I might see every time I returned after that.