This family-owned restaurant tucked in an alley beside the Trevi Fountain has been serving traditional dishes from Emilia-Romagna since 1931. Service is excellent and so is the food: Classics include tortelli di zucca (pumpkin ravioli in butter sauce) and magnificent tagliatelle alla Bolognese, the mother of all Italian comfort foods. A menu of secondi is heavy on beef. Save room for the walnut-and-caramel cake or lemon meringue pie. Reservations are essential.