Driving a rental car in Florence is extremely difficult.  Equipped with GPS, a good personal map reader and being fairly experienced traveling in foreign cities was little help.  Being lost is part of traveling but some time after return ing home, you could receive a ticket from the police department in Florence. There is a process to appeal but after paying an appeal fee and if the appeal is denied, the fine doubles!

You can pay the fine on-line (and it's recommended that you do pay it) because one doesn't want to risk problems on future European trips.

Beware if you plan to drive in Florence, Italy.