We stayed here with our two kids ages 9 and 11. It is small but as expected and had everything we needed for a wonderful stay in Paris! Beds were comfortable and the apartment was quiet enough with the windows and shutters closed at night.
There's a beautiful area out the back door in the center of the Palace Royal. Don't miss strolling through it on your way to the Louvre!
Tons of restaurants, grocery stores, and close to Velibe bike stations. Highly recommend staying here!