Great location - no street noise and safe neighbourhood, also close to many metro stations and in walking distance to Notre Dame! The communication beforehand with the owner went well, the caretaker of the building is very friendly. The apartment itself is pretty, quite tidy and fully equipped (as in bed sheets, table cloths, towels, etc.).
Two tips for future guests: there is very little to no privacy at all in that apartment (everything is to be found "in one room" and there's no keys or locks for the bathroom) and you might as well want to bring your own toilet paper!