The place description the host gave was 100% accurate.
The place is nice and so is the neighborhood -quiet, and yet sufficiently central, well-served by the Paris metro and with grocery stores nearby.
The host was very professional, and yet warm. He was there at my arrival, providing the keys, even if I arrived in the morning of a weekday and he usually works then. He showed me the place explaining me everything about its use.
The apt is at the garden level in this unusual townhouse in retreat wrt the street, so you have all the peace and quiet for yourself. The bed is comfortable, the furniture has low-key elegance. The host told me he lets guests use the garden for breakfast in the summertime -now it was just too dump to get out there in the mornings, but I'll definitely come back and make use of this hidden gem again!