As Americans, we are used to having some space in our homes. As long as you temper your expectations regarding the size of the flat, you will be fine with this property.
It is a walk-up on a European 2nd floor - which means third floor to us across the pond. Not really an issue.
The apartment is perfect for a couple, and tight if you have more people - even with the additional sleeping areas --- just super tight.
It is very quiet, so once you're back at the flat, you can relax and not have to deal with city noises. You really can get a good rest.
The location is fantastic. We walked pretty much everywhere, with the exception of getting to the Eiffel Tower and Versailles for which we took metro/RER. Lots of good shops, places to eat, tourist attractions are within 10-15 minutes at leisurely waking pace.
Vincent was very accommodating to our family, even when we requested a change to our itineray resulting from a change to our travel schedule.
We recommend this property without reservation.