Traveling to Italy via Rome with another couple in January. My husband and I previously visited Italy two years (went to Milan, Verona, Venice, Florence, & Rome) and are looking for an additional destination or two besides Rome. We were hoping to add somewhere we haven't been, initially thinking the Amalfi Coast. Due to seasonal closures wondering what everyones opinions are additional location to add? We are there 7 nights, planned on spending at least 3 nights in Rome. Since we don't have too much time, were thinking a destination no more than 4 hours away on a high speed train.
Wondering thoughts on Siena, Naples, or smaller towns outside of Tuscany? Figured our friends could always take a day trip to Venice or Florence from one of these destinations? Open to any and all suggestions of places. We won't have a car, so we would like to be near public transportation.
Thanks in advance!