Flavio’s plain dining room is burrowed out of the side of Rome’s most unusual “hill”: a large mound made from amphorae discarded during the Roman era. Food-lovers, however, come here for classic Roman pastas like cacio e pepe and amatriciana, plus quinto quarto (nose-to-tail) entrees at fair prices. Hearty dishes like polpette al sugo (meatballs in red sauce), coda alla vaccinara (oxtail), and involtini (stuffed rolled veal) are good for sharing. Note: Maybe it was just an off day, but on our last trip to Flavio our meal was just okay—hence we dinged them a star.