We are a family of four and we rented both rooms on the 5th floor or Rue d'Arcole. The amenities were great. The location was perfect. Our host, Alain Thierry, checked up on us via email frequently.
Be aware that the apartment is on 5th floor (6th for Americans) of a building without an elevator. So, if you have mobility problems (which we didn't) this is not for you.