Rafaël's apartment is very well located in a quiet zone close to the Panthéon. It is in a 3rd floor (no lift) with thin walls, therefore, if you are a light sleeper you might hear what happens in the corridor. However our biggest complaint was the communication and "welcome". I had sent Raphaël a few weeks ago our landing time in CDG (9:15) and estimated arrival time (10:20 - 11:20) and told him I'd call when I was in the train. I called and told his wife we'd arrive @ 10:45. From then on it was not possible again to talk on the phone and I could only communicate via AirBNB messages. He told me that the cleaning person (who had the keys) would arrive between 11:30 and 12:00. We went for a walk (with the suitcases) and were in the apartment @ 11:45 to get the keys. The cleaning guy finally showed up @ 13:00 to give us the keys, and THEN had to clean the apartment (+-2 h more). When you have 2 days to visit Paris and you spend a couple of hours waiting AND WITHOUT proper communication, you are not happy.
Besides that, we had booked for 3 people and got only 2 towels (no hand towels, nor foot towel for the shower). Given the poor communication upon arrival, I didn't even bother to call again.
In the kitchen there were 2 coffee capsules, a bit of salt, oil, a few teabags and not much else (no sugar, milk/creamer, soap, shower gel, shampoo...). I did not expect, of course, 5 star services, however in most AirBNB places you can find these minimum amenities to make your stay easier/nicer (and so that you don't need to spend time finding and buying stuff that you can not get on a plane back home).

In summary: OK apartment if you just want to sleep but very poor communication and service that lead me NOT to recommend Raphaël's apartment.