Antoine's flat is a great location to stay to tour Paris. Altogether, it was peaceful, safe, and at the center of a lot of tourist sites. Subways are close enough, though I prefer walking much of the time. Great restaurants nearby as well. Also have a great view of the river.
Biggest bonus is his flexible check in and check out time.
Downside is that there's 4 flights of stairs to walk up with no elevator. Bathroom is with a separate toilet room, which is unheated (if you are a winter traveler).
Altogether, great Airbnb to stay in.