The place is clean. It's a studio type place so the bathroom is small, though well decorated. It's sub-basement level with access from the street (it was noisy late at night and early morning when we were trying to sleep). Having a washer and AC was a plus. It's also close to 2 metro stations and walkable to the Marais district.
Check-in was not a good experience. You are supposed to contact the host 2 days in advance with check in time, then again on the day of arrival before you show up at the place. We told JP that we were going to check in at noon 2 days before arrival. He told us he'd be out of town and gave us his friend's number to text. On the day of arrival, we texted 4-5 hours before check-in time and said we would be there at noon as previously stated. The friend that was supposed to let us in said he was busy at that time and could meet us at 12:30. He wasn't there at 12:30 and we lost communication with him (apparently his phone died) but he didn't show up until 1. So, we wasted an hour on our first day in Paris due to check in issues. Also, don't use the "get directions" in the Airbnb app, it takes you to the wrong address. Copy the address directly in to google maps.