My husband likes pizza. I mean, he REALLY likes pizza. Every time we visit a new destination in the States, he checks out the top 10 pizza places and we have to try at least a couple of them. That being said, the pizza margherita at Pizzeria Ai Marmi was the best pizza we have ever had! The mushroom and sausage pizza was a close second. There is usually a line outside (which really tells you something about a pizza place in a town full of pizza places), but it is well worth the wait. Bruschetta was fabulous, too. After your dinner, walk off some of those calories by strolling through the charming Trestevere neighborhood.