I was staying at Julien's place for 3 nights, and it was just perfect for my visit. Everything was as shown in photos (except the little white table). The room is very small, though ok for me. The toilet and the sink were not working properly, but it somehow wasn't a big problem. The location is great indeed; you can reach Montmartre or the center of the city on foot in about 20 min, and the district is quiet during the night.
Julien was a nice host: I missed our rendez-vous time as I got lost in the new city, but he returned some minutes after my call. He helped to fix the damaged wheel of my trolley and to plan my journey on the last day. I recommend his apartment for short visits and not picky travellers.