This apartment has an amazing location - especially for guests who need to be in close proximity to the conference center at the Hyatt/Palais des Congres des Paris. We spent 1 week here with 6 people. Everything was clean, beautifully decorated (the pictured are very accurate), and the apartment lays in a quiet backyard away from any main street.
However, be aware that it is a comfortable size for 4 people, but becomes quite tight with 6, as the living room does not leave much space once the couch is turned into a bed. Also, we only had 1 key for 6 people, which was a problem for us, since we sometimes came home at different times. Communication beforehand was very smooth. Thanks for having us!