We loved our stay here. It could not have been a better neighborhood. We had an excellent restaurant, a grocery, boulangerie, poisonnerrie, charcuterie, and fromagerie within a stone's throw. Just a short walk to many other great restaurants and a Monoprix as well. The park Montsouris was a short walk away and a great place to spend some time with out child. The place is a 7-10 minute walk to Corvisart, Tolbiac, and Place D'Italie Metro stops. The beds and linens were excellent, and the kitchen had almost everything we needed. Since we visited during a heat wave, our hosts were kind enough to provide two fans. They were also very responsive when we had minor questions. It was also quite spacious by Parisian standards. Since we stayed three weeks, this was very important to us.
A few cautions. The couch is getting worn out. Stuffing is spilling from the cushions and it no longer comfortable. That likely will not bother you for a quick weekend, but over three weeks we would have liked something more comfortable. And if it is hot and you must sleep with the windows open, the front bedroom is quite loud. I needed earplugs to feel like there weren't motorcycles and people walking through the room at night. If you can shut the windows, though, its not as loud.
Overall, I would recommend this apartment, and we would consider renting this place again if we come back to Paris.