Although we didn't actually meet Julien, it was very easy to communicate with him and there were no problems at all with check-in/check-out. It's a great apartment. You won't be disappointed! It's basically around the corner from the Sacre Cour and a dozen or so beautiful little shops that make Montmartre what you'd imagine. While the apartment's a little small- it's got a lot of character in a great old-building and comes with some cool perks such as the heater/towel rack which gives you the lovely bonus of heated towels, and some very cool lighting- especially in the shower. And if you're a fan of the movie, Amelie- you won't be disappointed. Much of it was filmed within a 5min walk. We had a great time, would recommend the place to anyone, and the photos do not do the place justice at all! ;)