I much prefer their location at the Aria but the location at the Bellagio is where I go to when I'm staying at this hotel. The pastries at the Aria location seem to taste better than the ones here, I'm not sure why.
I do enjoy the crepes here which I tend to get everyday during my stay with no guilt.
The set up for the line is also very unintuitive. The store is set up such that you walk in a circle. The cashiers, pastry and gelato displays are in the center so you walk around it. There is one cashier just for the crepes and another cashier for gelato. But this is not intuitive. We ended up standing in line for crepes at the gelato cashier only to be directed to the other cashier when we got to the front of the gelato cashier. When we got to the correct cash register, the manager happened to take our order and we let him know the confusion. He agreed that the store layout was confusing and promised that they were working on it!