This is the best place we’ve stayed in Paris. There is a separate bedroom and living space with comfortable pull out. But what makes this place special is being on the 2nd level (“first level” in French) and opening the large windows up to the fabulous street sounds and green views of the trees and park below the cathedral. Listening to the local accordion player playing French folk songs was lovely, and it was quiet at night. Also, you are so close to multiple awesome little squares filled with fantastic restaurants. I’ve never stayed in Montemartre before due to the perceived distance from the Louvre area, but the Metro (and scooters!) were easy for the three of us. One note of caution, I did get pick pocketed on the line Anvers station is on, but their tactic was so creative it didn’t really bother us ;)
Anyway, the flat is well equipped, clean, in a nice building, and actually added to our trip experience vs detracting as many Parisian flats can do.