Jean is very communicative (w excellent english) and Jean's place is huge (Paris standards), comfortable and pretty. We slept really well, with a very good, firm mattress. the 2 baths had plenty of very hot water.
the kitchen is lightly equipped for some easy cooking...
the 4 flights up are no problem for the fully mobile. There is a day care next door that starts up around 8:30- no problem with sound sleepers (or earplugs:). The apartment is extremely quiet otherwise.
we loved the location, it is a bit out of the fray, with 3 metro stops ,lots of great bread, cheese, pastry shops, and restuarants, wine shop, grocery ,etc. We checked in and 10 minutes later were on the steps of the Pantheon, seeing the Eiffel tower lit up.
we would definitely book here again.