Had the pleasure of staying 5 nights in Cedrics place.
The place is very centrally located with sights, bars, restaurants etc. right near. The flat is fairly simple but there is really what you need in terms of amenities. The wifi is also rather fast.

I'd imagine the apartment is perfectly suited for 1-2 adults and perhaps a smaller child.
The interaction with the host was very friendly and efficient. I had a fairly late check-in that became even more late due to delayed flights. That was not a problem at all. In fact, he received me down in the street when I arrived because France had just won a big football match so people in the street were a bit "exhalted" :-)
There is an elevator but it doesn't go all the way up and they last flight of stairs is fairly steep. So if you are very poorly walking this might not be the right flat for you.
Overall, I can only give Cedric and his flat my recommendations.