The sushi was good (not great), so the fourth star is due to the ambiance and service. It has a trendy feel while still being somewhat casual. The elevated booth seating is fantastic and affords you a view of the strip.
I recommend the Far East Mule if you're in the mood for a cocktail. I'm not normally a gin drinker and am definitely not a fan of sweet drinks, but this cocktail is smooth and delicious. One or three will help make the night.