The apartment is exactly as advertised. Communication with the host was excellent as well, he was checking regularly if all was good and we were happy.
We were group of 6 people (2 kids) and we’ve slept comfortably. Just bare in mind it is an Airbnb for visitors, not meant for extended use of kitchen. That was no problem for us as we would have breakfast at the apartment and rest of the meals outside.
Location is just perfect as Montmartre is my favorite part of Paris with it’s bars, restaurants etc all walking distance. Same for public transportation, both metro and buses.
I highly recommend the apartment and the host.