First off, I have to say how terrific Guillaume was. When booking the flat, we were having a lot of troubles with the website. He was very patient during the process and returned our emails immediately (and late at night). During our stay, we were having trouble connecting to the wifi, and Guillaume made a special trip back to the flat to fix it for us. He was easy to contact and returned emails/texts promptly. The flat itself was very nice and very clean. The view of Sacre Coeur is unbeatable, and we enjoyed many nights drinking wine and enjoying the view and life below. The flat makes great use of space. It is compact, but comfortable for the two of us and our three year old son. The area of the flat was....interesting. In the Pigalle area, we were surrounded by porn stores which, for us was no big deal but not suitable for our three year old. Nightlife was a loud and rowdy. Luckily our son sleeps through pretty much anything, but the noise kept us up many nights. However, being up on the 6th floor, we never felt unsafe. But, I'm not sure we would go out on our own past 11:00. Otherwise, the flat is close to great shops in the Montmartre area, great cafes, and the Metro is right across the street. Apartment also has an elevator, which was a bonus! Overall, we had a great stay and would highly recommend Guillaume's flat for couples and groups of friends.