Trattoria Mario
Locals flock to this narrow, family-run trattoria to feast on Tuscan favorites served at simple tables under a wooden ceiling dating from 1536. Genuine Florentine hospitality prevails—you'll be seated wherever there's room, which often means with strangers—and, yes, there's a bit of extra oil in most dishes, which imparts calories as well as taste, but aren't you on vacation? Worth the caloric splurge is riso al ragù (rice with ground beef and tomatoes).