We've stayed in hotels and homes around the world and this was one of our favorites. Our communication with Nicolas was great as we planned logistics and the house was exactly as we'd hoped when we arrived. During our introductory tour with Nicolas we were provided with an extremely helpful comprehensive guide regarding the home, transportation, and area amenities.
The house is beautiful and has a floor plan that can facilitate both social interactions and "alone time". Having access to gym equipment, a sauna, and a steam room was awesome, especially after all of the daily walking. There are bakeries, a grocery store, and pharmacy just outside the house, so you'll be covered if you prefer to cook or need sundries.
The Voltaire metro is a 2 minute walk from the house, but you also have close access to bus lines that can take you around the city. We used Paris Visite passes during our stay and were able to travel to all of the Zone 1 through 3 areas of interest within 30 minutes or less. We also traveled to Disneyland Paris and Versailles during our stay (using Paris Visite Zone 1 through 5 passes during those days) and were able to reach each place from the house within 45 to 60 minutes, depending on the day. If taxis are your thing, there's a taxi stand only a 2 minute walk from the house (this was helpful when we left for CDG - FYI, that trip cost 50 Euro).
The home is conveniently located on a street that will take you directly to either Pere Lachaise Cemetery (walking in one direction, towards the Voltaire metro) or to Place de la Bastille (walking in the other direction). If you walk in the direction of Place de la Bastille you'll find a lot of restaurants as you near the monument, so don't forget to check them out.
We really enjoyed our stay at Nicolas and Jean-Yves' home during our visit to Paris and would love to stay there again if the opportunity arose.