Does anyone have any recommendations for drivers who specialize in day tours from Florence to Siena and the area?

Thanks!

Luca of Hills and Roads comes very highly recommended here:

http://www.hillsandroads.com/

I've never used him but many have; you can search the forum to find what they have to say.

Are you looking for a private driver or a tour? I took a day tour last Fall to Siena and San Gimignano. It left Florence at 9am and we got back just after 6pm.

The company was Viator. They offer a lot of tours - day trips, wine tours, cooking classes, etc.

I've done several day trips with Luca Garapa from Hillsandroads.com. My entire family LOVES him. He's a great guy- extremely knowledgeable, very personable, and an excellent driver. Can't recommend him enough!

Another HUGE roaring vote for Luca Garapa. We used him several years ago for two separate touring days in the beautiful hill towns of Tuscany. He is extremely polite, intelligent, an extremely careful and courteous driver. He is a wonderful young man to spend the day with and he has reasonable rates and will tailor the day to meet your needs, wants and abilities.
Have a great time.