Koi, I believe, is the only sushi option at Planet Hollywood. Some of my friends came from East Coast, so we decided to go grab some sushi real quick while we were gambling across the street at The Cosmo and went to Koi. Food was ok. The service was a little disorganized. Maybe it's because we got there right when they opened, but still.
For the appetizer we ordered Edamame with Sea Salt, nothing special. After that we got Shrimp Tempura rolls, Dragon rolls and one of the Spicy rolls. The sushi were delicious. We also got some sushi to go for my sis :)