Greatest not so sure but an absolutely beautiful country which is my favourite to visit. You have Venice, Florence, Lake Garda, the Amalfi Coast, Sicily and Rome to name but a few. Florence my favourite city I’ve ever been too. If you’ve not been and you get a chance then definitely go.
Pft…I can list more than 4 things why it isn’t, when I think of them Surely the itai’s can’t claim credit for the weather
Rome is amazing and has the “biggies” such as Coliseum and the Vatican which Florence can’t compete with. Florence, however, does have its own gems such as the Duomo and the Uffizi and the Ponte Vecchio. Florence is a bit more compact and Rome has more “inner city” type areas and Florence is just beautiful. If you go then go to Piazzalle Michelangelo which shows views over the city which for me are unbeatable. It’s close and Rome is one heck of a city but my preference is Florence. And it has some cracking restaurants.