Where to go/stay in Italy

I’m getting married at the end of August 2025 and we want to go to Italy in September (or early October) for our honeymoon.

We’re thinking 2-3 places over a 10-14 days.

In an ideal world, we would visit somewhere coastal, somewhere city and somewhere winery/countryside.

I have been to Rome, Cinque Terre and Venice when I studied abroad and don’t feel the need to return on this trip. I would love to stop in Florence now that I have adult money and don’t need to have the two buck chucks and 5 euro pizza for every meal. My fiancé has never been.

Budget: $15k