We are considering dining at Antico Arco in Trastevere and Quinzi e Gabrielli near the Pantheon. Is there a specific dress code for these restaurants, or other fine restaurants like them? We will be sightseeing all day, and we also want to walk before or after dinner to see the sights. Can we dress casually at these restaurants (i.e., nice jeans with a nice shirt), or casual chic (i.e., slacks or capris with a nice shirt), or are they dressy (i.e., coat for men/dress for women?) We are really looking for a restaurant in Trastevere and a restaurant near Piazza Navonna or the Pantheon -- with excellent food, service and nice ambiance -- where we can dress casually for walking in the evening -- and where we will not spend all night dining. We are also not looking for a quick pizza. Price is not as important as quality and comfort. Please help if you can! Thanks!