Dining Outside the Home: Trevi Italian Restaurant in Las Vegas, Nevada. At the foot of a Romanesque fountain, so close you can hear the water splashing against the marble, tables for two make dining cozy on an indoor patio at Trevi Italian Restaurant. Feel free to take your time with a signature cocktail and tantalizingly delicious appetizer. Might I suggest the Jumbo Shrimp Cocktail. Grab one by the tail, swirl it in the tangy sauce, and then take a bite of the thick juicy flesh. Repeat. Finally, pinch the top and bottom of the shell until it cracks. The tail meat easily slides out so you can pierce it with a fork and slather it in more cocktail sauce. That’s amore.