Dominating the refectory wall in what was once a part of the San Salvi monastery is one of Andrea del Sarto's most extraordinary frescoes (1527). In this scene of the Last Supper, the diners gather at an austere table beneath a grand trompe l'oeil vault. Curiously, the tavern owner and an employee are peering at the proceedings from a window above and behind them.

They watch as Jesus hands Judas (who sits among the apostles and not customarily alone on the other side) a piece of bread to indicate that he is the apostle who will betray him. There is a collection of other works by Andrea del Sarto's contemporaries on show. You are more than likely to have the place to yourself.