Only a couple of minor tips;
1. Having a car is a great idea. I tried to get around Italy last year to DH. The economy was in ruins so public transport was a bit unreliable.... And the ticket machines were broken! People had to queue and buy a ticket face to face. They all wanted to talk about whatever, and I missed a bus or two waiting in line while someone talked about pasta recipes or somesuch!
2. Wifi was not working at times, even on the first class carriage in the trains.
3. My CoverMore Sim card (used it for my iphone) was only able to provide patchy coverage. Don't know whether this was a product of the failing economy or CoverMore are a bit dodgy. To be fair, they were good in France, Spain and Andorra.
Kurt