We missed the deadline to return our rental car and tried to drive to the hotel which supposedly had a garage. BIG MISTAKE! We spent 45 minutes driving around, mostly in circles, trying to navigate the one-way streets. We finally came across the Garage Duomo, that charged us 25E to park the car for the night. The garage attendant was the only person who gave us accurate directions back to the car rental location on the edge of town--the staff at the front desk at the hotel gave us directions that took us the wrong way on one-way streets. Our 2004 Streetwise Florence map was also had errors. Bottom line--don't drive into Florence!
I've witnessed accidents with those crazy Italian motorcycle riders, so that's a thing to consider - there are just too many of those machines there, aren't there??