We stayed at this amazingly central location with our three kids under 10. The location is amazing and we walked to Notre Dame, the Musee D'Orsay, he Louvre and Centre George Pompidou easily!
I read one review that seemed critical. I disagree with many of those points. Apartments in Paris tend to be small. This is a small apartment. But, if you plan to sit in an apartment in Paris for lengthy periods of time, then, this isn't the apartment for you.
It was clean and well kept. Philippe is a responsive and proactive communicator. And, we had adequate pillows.
This is an excellent spot for people touring Paris.