Here's what I really liked: super clean! super excellent staff! wonderful breakfast! excellent coffee in the room! nice atmosphere! bar open 24/7 incl snacks!
What I did not like that much (but it won't take a star from the overall rating): there are no restaurants in the area. you have to walk about 1 mile to a mall, or take Uber or bus to go to Versailles. Fortunately they serve some food at the hotel.
The second thing I didn't like was the pillows. They are too thick and give you a stiff neck. I asked if they had a different pillow, they sad no.
And here are the no - but's:
They don't have a gym, but there is a forest with a wonderful trail for running or walking, you can also run to Versailles Palace (aprox 3.2 miles).
The lack of a decent restaurant is a problem if you don't want to walk far or take transportation. But, the gut thing is that they do have a different dinner plate every night, and they always have pizza. Not necessarily the type of food you envision while in or near Paris, but at least it's food! And they serve drinks 24/7.
Overall I truly recommend this B&B.