Named after the French city (and pronounced simply "X"), this sophisticated bistro-bar's leather booths, 1940s brickwork, olive drapes, and intricate marbled globes, provide a perfect home for well-prepared French food. Regulars can't get enough of the creamy onion soup or escargot appetizers, prosciutto and goat cheese salad, or entrées such as oak-grilled fish Aixoise, steak frites, or mushroom and fontina wood-fired pizza. Most items (salads included) come in full or lighter-appetite portions, and you'll definitely want to save room for dessert. Aix's in-house pastry team ensures no sweet tooth leaves unsatisfied, with offerings such as profiteroles (mini cream puffs filled with vanilla ice cream and topped with chocolate and caramel sauce) and warm chocolate banana walnut bread pudding. Call for preferred seating.