It’s a huge square or what they call Piazza, you can spend a day here, all the attractions are within walking distance. There are many bars, restaurants, small supermarkets, and all the commercial shopping streets are connected. All bus terminals are not far from here so it is convenient. It is hot during the day so take precautions. The Tourism Bureau is near the entrance where you can ask about the cost of the tour guide. It is great to visit the city this way.