If you were to make a list of the great wonders of Italy, hidden amid Venice’s canals and Rome’s Colosseum would be cheap, pretension-free osterie (casual taverns) such as Osteria dell'Orsa, where the food serially excels the giveaway cheap prices.
It's wildly popular with students, who mob the place for daily chalkboard specials and a long list of panini, crostini and other quick eats. Go early.