First off, as other reviewer's have mentioned, Pierre does not own this apartment. He is an employee of the management company that handles the rental. I never met Pierre, though I interacted with a colleague, Valentin, who was pleasant.
The apartment is nice--clean and with modern furnishings. The neighborhood is also good--close access to several metro lines and within easy walking distance to the Eiffel Tower. The neighborhood is not as quaint as the more touristy areas of Paris, but good enough if you've had the chance to stay in those areas before.
Though I would recommend the apartment, there were two issues we faced. First, the apartment was relatively hot and stuffy. Paris experienced some hotter days while we were there and there is no a/c in the apartment. Obviously we could've opened the windows, but the apartment is on the first (European) floor and right on the street, so it's pretty loud. Also, there are no screens.
The second issue was the lack of directions for the apartment. I've stayed in many Airbnb apartments and most come with a guidebook telling renters about how to operate different apartment features. This would've been helpful.
Other than those issues, the apartment was good for our needs and we had a pleasant stay.