I was in Rome last summer. Came on the hottest day of the year there - over 100º. Visited the Coliseum, the Mamertine prison (where the apostles Paul and Peter were held), and the Forum. Wanted to visit St. Peter's Basilica but it was across town and we didn't feel like doing more walking. LOL... all of this was in one afternoon, as we got on the cruise ship in Rome the following morning. We did eat at a nice restaurant there, and I did have pasta and pizza. Honestly, the pizza wasn't that much different from most pizzerias back around here. But the pasta.... huge difference. And delicious!
Loved Italy. Spent a day in Rome, another day in Palermo, and finished up Catania before we cruised to Corfu (Greece), Split and Zadar (Croatia) and then on to Slovenia and Venice. If you are into Europe and enjoy cruising, I highly recommend visiting these places. Lots to do and very beautiful!