Location: we loved being in this area. Lots of great non-tourist restaurants and cafes. 2 minute walk to metro line that can get you to any attraction in Paris in 15-30 minutes. We felt very safe in the neighborhood and in the apartment itself.
Apartment: Nice and clean. Be ready for the steps to the top floor (it gets easier after a couple of days). Toilet is on the landing a few steps outside the apartment door and is not an issue. The price is a great bargain if you want to be IN Paris and can handle the steps and bathroom thing.
Also, there is a functional washer/dryer in the room, so if you’re traveling with a backpack, feel free to pack less since you can clean your clothes.
Host: Amaury responds very quickly and was very helpful. His apartment notes are very clear and it was easy accessing the apartment via his instructions.
I don’t know what else except that we had no issues and it was a wonderful stay. Don’t be skeptical of the nice price point because the apartment is great and includes everything you’d need (just be aware of the steps to the top and the toilet being outside your apartment a few feet).