High marks all around. An added benefit is the building is very secure and quiet (need a code to get in and very respectful neighbors). Dominique is the perfect hostess. She met us at the apartment and made sure we were entirely comfortable. She was eager to help with anything that would make our stay (in her apartment and Paris) more enjoyable and gave us a terrific dinner recommendation. This apartment is in a perfect location: block and 1/2 from the Champs and multiple great restaurants on the same street - we enjoyed three great meals literally feet from our apartment. For the location alone, this is one of the best values in Paris close to the Champs.
The only small issue is that the second bathroom has no toilet. This was not a problem for us as my wife and I were traveling with my brother and sister-in-law which we do a lot) but worth noting in the spirit of full disclosure.