This ultra-traditional trattoria—complete with paper tablecloths and TV in the background showing the game, owner chatting up the ladies, and bustling crowd waiting to be seated outside—is a Trastevere stalwart. On the menu, besides namesake cacio e pepe pasta (sheep’s milk, Pecorino cheese, and black pepper), you won’t go wrong with other classic Roman dishes, such as amatriciana (tomato and guanciale pork jowl)—but be ready for hearty portions. For secondo—if you have room left—keep it simple; polpette (stewed meatballs), saltimbocca alla romana (veal cutlets with sage and ham), and simple grilled meats offer oodles of flavor at sensible prices. There are few culinary surprises, but it’s all cheap, served with a smile, and in the heart of tourist Trastevere.