We stayed in Marie-Claude's apartment for the first two weeks of May and had a perfect visit. The apartment was exactly as described on the Airbnb site and was immaculate. Marie-Claude lives next door and was very helpful and available for any questions we had. She speaks some English and I speak some French, so communication was not a problem. I have to mention the bed since we were both concerned that we wouldn't sleep well. It was a queen bed and was extremely comfortable, plus the apartment was quiet and has a very nice bathroom and shower.
The apartment is conveniently located on the "rive gauche" (right bank) about halfway between L'Ard de Triomphe and La Tour Eiffel on Victor Hugo Avenue. There are a large number of restaurants, patisseries, and boulangeries all around, including a Starbucks directly across the street if that suits your fancy.
We are both in our early 60s and very fit, so we walked or rode bicycles everywhere. There is an extremely inexpensive and convenient bike rental system in Paris called Velib, which we used extensively, and I recommend checking it out online. Using Velib saved us a significant amount of money. We never used a taxi once, although we did use the RER and Metro subway train systems to and from the airport and to visit Versailles and the Champagne district in Reims. We relied heavily on the fabulous Rick Steves' Paris Guidebook (look it up online) and saved $$ by purchasing a 4 day Museum Pass.
If we return to Paris we will definitely stay at Marie-Claude's apartment again. I can't think of anything about it that we would change. Thank you, Marie-Claude, for allowing us to stay in your lovely apartment.