First off, Fernando is an excellent host. Even though there was construction in the building hallway and in the apartment above us that didn't affect or bother us, he warned us about it and apologized before we even checked in. He responded to questions very quickly.
This apartment is in a great location. It is a block away from a street packed with bakeries, grocery markets and cafes, and a block and a half from the M3 metro stop and 7-10 minutes from Les Halles metro stop, where multiple lines intersect. Within a 15 minute walking circle is Le Louvre, Centre Pompidou, Sainte-Chapelle, Forum des Halles, Le Chateau des Halles, and the Seine River. I highly recommend getting your daily bread and pastries from Boulangerie Blouet.
The apartment itself is charming with excellent modern amenities, including a washer/dryer and new appliances. It fits 3 people very comfortably. As some have written, the stairs up to the apartment are a bit tight. It is stockpiled with laundry detergent, soaps and shampoos, some likely from previous guests. We loved our stay in Paris.