The apt. is quite small but is fine for two people. There's no oven, but the two burners, electric kettle, and coffee-maker work well. There's good wi-fi in the apt. The washing machine is very useful; there's a rack for drying your clothes which fits (barely!) in the bathroom. So, while everything is functional, it would be easier to live in this small space if it were not already full of unnecessary objects - enough wine glasses and plates for 20 people and espresso cups tucked away on every shelf! It's a bit like living in the back room of an antique store. Still, it was comfortable enough, and the location is excellent. Being right by the rue Daguerre makes your shopping easy and it's a nice street for hanging out and observing normal Parisian life without so many tourists.
We never met Marie-Christine, but the gardienne let us in and showed us around the apt. The 500 Euro deposit seemed unusual to us, but Dov was there at the check-out and returned it correctly. In the end, a good stay.