We are a family of five, and the appartment was perfect for us. The spaces are light, chic and well kept. The kitchen and bathroom are newly renovated and the entire space is in good shape. Celine was a great host who let us keep the luggage in the appartment on the leaving day since we had a late flight.
Location is great. It is possible to walk to Place de la Concorde, Louvre and the Opera, otherwise the Metro is close. The neighbourhood is nice and safe with several shops and restaurants.
The view from the appartment (5th floor) is great and in spring/summertime I think the balcony would be really nice. Being on a the 5th floor, you have the choice between a small elevator or getting some exercise :) we did both.
The appartment had a good temperature. It was colder outside than usual for Christmas, but the indoor temperature was fine the whole time.
Two things are worth mentioning. The appartment has no TV but a (large) screen for internet TV. This worked fine for us. Due to a somewhat odd layout of the living room, you need to sit at the dining table to watch the TV/screen, if you sit in the sofa, you are too far away. And the beds/ madresses are not the standard we are used to. We slept OK but some of us got a severe backache after a few days. If the beds were upgraded, we would absolutely stay again!