Alexander is an energetic, responsive and caring host, a true superhost! He made accommodations to my schedule on both arrival and departure that I greatly appreciated.
The apartment is lovely and comfortable -- it's actually been renovated since some of the photos so it's even more attractive than we expected. Everything was spotlessly clean. The bedrooms are large and airy by Paris standards, with a surprisingly charming view over a bucolic courtyard. You do hear children playing in a further schoolyard on school days but we didn't find them annoying. The living/dining/kitchen area is ample for two people and adequate I think for up to four, although I wouldn't call it large. The rain shower + detachable shower head is very nice. The washer/drier is a truly awesome piece of gear: not only can you set it to wash and then dry, which it does very well, but you can set it to finish at an approximate future time!
We were there for the record heat wave at the end of June, 2019, but we weren't uncomfortable because we opened all the windows to let in the evening coolness, then shut both windows and exterior shutters as soon as the sun came up. This kept the apartment reasonably cool even on the 95 degree day; there are also two good fans.
The neighborhood is very sweet and residential, but with an amazing number of fine restaurants, and two metro lines, within a few blocks. There's an excellent Carrefour supermarket right across the street and a Picard frozen food store in the same block, when you choose to eat at home.
I'm sure I've forgotten some details, but we had a great, month-long stay (for which Alexandre offers a substantial discount). I really can't recommend the apartment too highly.