White tablecloths, fine china, and marble mantle pieces do justice to the setting in the 18th-century Palazzo Arnolfini, and even the well-laid tables on the terrace add a splash of elegance to quietly refined Piazza Giglio out front. The food is reassuringly Old World and traditionally Tuscan. Many Lucchese regulars would not think of dining anywhere else, or wavering from a meal of the house specials: tagliatelle topped with shaved white truffles, perfectly grilled beef tenderloin with porcini mushrooms, and for dessert, Lucchese buccellato (sweet bread) filled with ice cream and berries.