4.5 Stars.
The nicest club I've ever been to. Pretty big dance floor, gogo dancers, lot of tables for bottle service and multiple bars. I always had a good time.
On a standard weekend, the line is extremely long, so it'll take you forever to get in and sometimes the cover can go as high as $50. Even though XS is big and it extends into the pool area, it gets pretty crowded and it becomes difficult to navigate.
Suggestions:
XS is so much better on weekdays because it's not as crowded, but there are still a good amount of people. It also doesn't take as long to order drinks on weekdays.
On weekends, If you don't have a table, go early, get the stamp and return later.