My friends and I arrived at about 9 on a Saturday and the place was pretty dead with terrible electronic music playing. It wasn't an awesome intro to the place. But we were able to get a couch since it was so dead and that was nice.
The menu has many options for champagne cocktails. I've been to Paris several times and when I saw they had Kir Royale I automatically ordered it. Then it arrived and I nearly spit it out. It had Hennessy in it - not a classic ingredient to a real Kir Royale. In a total accident -non coincidental to not liking my drink - my drink spilled and our waiter quickly cleaned everything up and and did give me a new drink. It was the Champs Elysees had strawberry syrup with champagne. Much better.
Overall the decor was cute with lots of circles and made me think of champagne bubbles. There was an open door and balcony out to Market Square. That would be nice in the spring or summer. But all in all the place was just "meh". I'm not sure if I'll be back.