I stayed at the Renaissance last week for 3 nights. The staff was great, the hotel quite nice. It's a ways out there in La Defense, but with the RER it's really not a problem.

Woulds I have rather stayed at the Champs Elysees? Sure. But I didn't have the points.

So the Renaissance was fine (and free with points).

FYI- the hottub is out of commission. Would have been nice for the feet and back after a long day of walking.