This is very similar to an experience that you would have in Japan. Even more so than Pâtisserie Chantilly in Southern California (which is my current japanese favorite). So lets go to the review...
We had the prix fixe. Loved the sorbet with muscat grape jelly (very popular in japan), mont blac with chestnuts (tastes home made), and cream puff was fresh with berry sauce. Very well executed. It is an experience.
If you want the best dessert experience in LV, this is it.