Hello Michelle, I have not rented a car in Spain but when I was on
tour,the main highways looked very good with gas/rest.stations right
on the highway.I would really think about driving in the cities. It
looked almost as bad as Rome with no parking. Find a hotel,park and
use public transport from there. If you what to see Madrid maybe only
spend 3 days in Barcelona, I felt it was a good overview.Definitely,
Plan to spend as much time as you can at the Alhambra. I usually can
see most of a museum in a few hours but I would have liked to have
spent the whole day at the Alhambra.
Wilma from K.C.