Beautiful port with easy and cheap rail access to Nice, Eze or Monte Carlo. There is a small public beach near the train station as well. Probably the prettiest port in our itinerary (although Toulon looked better than I expected too).
We docked at Livorno and it is a massive industrial port and very ugly! We took a cruise line transfer to Florence which meant we had about 5 hours in the city after our 1.5 hour transfer. The guide was very knowledgeable but seemed intent on selling the Hop on Hop off bus tour. We didn't take that and I'm not sure how valuable it is anyway since a lot of Florence's main streets are narrow and better accessed on foot.
We went to look around the Duomo but the queue to climb the almost 500 steps to the top was too long so we went to the Boboli gardens for a fantastic view of the city.
Everyone who stayed in Naples commented on how dirty it was. We took a private tour to visit the ruins of Pompeii (extremely busy but it was a public holiday in Italy). Then we drove to Ravello and Positano and along the Amalfi coast. The driver took an alternative route due to a landslide that was causing a massive traffic jam. I would highly recommend taking a private tour here but if that is too expensive, a visit to Herculaneum would be my choice for a future visit.
We tried to save money by doing the audio tour in Pompeii but it isn't easy to navigate the site and they had run out of maps. We saw lots of interesting things but we had trouble finding the plaster casts of victims which we would have been disappointed to miss.