In early October, I am traveling to Italy on business. I have 2.5 free days to spend in Florence and Tuscany. I am intrigued by spending a day in the Tuscany countryside with visits to a couple of vineyards and maybe Siena. That leaves only a full day in Florence. Does this sound reasonable or should I just stay longer in Florence? I'm open to a rental car of an organized day trip from Florence. I like the idea of doing our own trip with a car and avoiding over touristy outings.