Don't hesitate. This apartment was great. The perfect outpost for two of us. It sleeps four, but that might be tight as it is a relatively small space typical of a major city. It's clean, has every convenience (though the washer/dryer takes hours to go through the cycles), and the location is amazing. The Eiffel Tower is spitting distance, yet the street the apartment is on feels quaint. There's a grocery and a great pastry shop right next door.
Olivier was terrific. Very communicative and helpful with any information you'd need about the apartment or Paris in general. He was out of town, so his lovely mother let us in and showed us how everything worked.
All in all, the great memories of our trip will be based on always having a comfortable "home" to come back to after active days.