NOTE: While Trevi is a Italian restaurant, I am reviewing the gelato stand to the side of the establishment so please consider this dessert review independent of the restaurant as I've never eaten here before.
Situated inside the Caesar's Palace Forum Shops in vivaaaaaa Las Vegas, Trevi's gelato was a welcome surprise and discovery. At first you might not notice it hidden around to the corner of the main restaurant, but the gelato here is molto squisito! That's Italian for: holy crap this is yummers!!
It's so good, every time I come to Vegas now, I absolutely must stop by this place each trip to grab a generous helping of their very excellent tiramisu gelato. I highly recommend it. Real pieces of ladyfingers and just the right amount of rum soaked in - It's the most authentic tiramisu-flavored dessert that I've tried that isn't the real deal. Of course there's other flavors to choose from but I'm a sucker for all things tiramisu so if they can make it this good, the rest has to be pretty good. Actually, my friends tried other flavors and they agreed it's very good without having to resort to go to Italy.
Prices are reasonable at about $6 a pop. But hey you're in Vegas, indulge yourself!