First off, if you're looking for a place that is well located, a great value, while also very safe & secure; you've found it. It's ideal for one person, or a couple for a shorter stay.
Yann was a pleasure to deal with, and always quick responses. His friend Didier, who manages the property and let us in when we arrived, and is a charming, lovely and kind person that got our short 3 night stay off to a great start. He had a bunch of great recommendations for us in the neighbourhood and made us feel at home.
The apartment is a small single room, but is perfectly organized and has everything you could need. It also has the most secure deadbolt lock I've ever seen on the door, as well as a FOB system to enter the building. Know that your stuff is safe here. It has big, bright windows that open completely, a very small but manageable kitchen, and a couch that pulls out into a bed. Don't let that deter you at all, as it was honestly the best bed me and my girlfriend have had at an Airbnb; very comfortable!
It was a short trip, and we walked roughly 40km in the two full days that we had. It is incredibly close to Sacre Coeur; a must see both day and night. We were able to walk to almost every single major landmark, and see all the city had to offer along the way. This short trip has confirmed that we need to come back for a longer stay, soon!
I will say that the bathroom is incredibly small. I'm by no means a small guy, at 5'10" and 250lbs, so keep that in mind, but the shower was very hard to maneuver in. My girlfriend, who is nearly half my size, found it tight but manageable. The whole bathroom is new, and beautifully finished though.
Thanks for everything Yann, hope to stay with you again soon!