"Set near the Testaccio market on the slope of Monte Testaccio, this bustling, largely local favorite is known for Roman staples—fried meatballs, Roman-style artichokes—and a particularly notable cacio e pepe. Service is friendly but unhurried, so embrace a long, leisurely meal; finish with housemade ciambelle al vino (crunchy cookie rings traditionally dipped in red wine). Reservations by phone or email are recommended." - Regan Stephens