Marc S: This is the real deal. Very popular so you may have to queue at busy times, but they move quickly. Try the pizza Montecarlo, which is a capriciosa with a few extra toppings.
Marc S: Tonnarelli al'astice (pasta with lobster) highly recommended. Bring cash: despite the credit card signs on the window, they only take cash (€72 for lunch for 2... a bit pricey).
Marc S: Antique books packed floor to rafters in a cozy shop. Great variety of topics. Worth a visit.... Piccola libraria antiquaria, diversi soggetti. A visitare.
Marc S: Don't miss the chapel. It is off to the side, accessed from the corner of one of the galleries. It is interesting due to the number of relics there. ("I see dead people")