We had a very comfortable stay at Sylvie's apartment. By the way, there is now a key safe at the door, which is useful as there is only one set of keys.
Well equipped kitchen, comfortable beds, modern shower room, spacious living room. Very warm apartment, and quiet.
Near Cité Universitaire RER, which takes you up to the airport and the Eurostar (as well as central Paris). Nearby Parc Montsouris is a pretty place to walk in, even in winter!
Supermarket nearby, plus two excellent 'boulangeries artisanales'. We can also recommend the Indian restaurant in the street behind the block of flats.