Sylvia was extremely nice and helpful, and we managed to communicate even if we didn’t speak any French! The apartment is in a very large building, but we never had problems with noises/neighbours. The location is ideal, it’s close to at least 3 metro stations, and 5 minutes walking from the Sacre Coeur. I would only advise some renovation to the flat, as the bed was not super comfortable and the bathroom has probably seen better days. Overall, would stay again as to was a pleasure staying in the heart of Montmartre!