My wife and I are planning a trip to Italy this September just for 4 days and we plan to land in Rome. Someone told me that one and a half day's is enough for Rome and Vatican City and I should try to visit Venice ad one other city Florence or Milan. Can someone who are well exprerienced travelling in Italy tell me if this is a good idea. If so, how best can we cover these ?
I read that trains are the best way to travl between these cities as it is cheaper as well as the travel is breathtaking.
Any tips or link to useful websites is highly appreciated.