We had a great 4-day stay at Marie's flat. She was easy to communicate with, and very flexible and helpful. The flat itself was in a great location in Montmartre, and was very comfortable with a really interesting interior. We would definitely stay again, and recommend it to anyone looking for somewhere fun quite close to a lot of the sites (particularly the Sacre Coeur) and the Gare du Nord, while also slightly set back from the most touristy parts of Montmartre.