If you already have a satnav I agree that to get USA maps is the best bet.
Trouuble is that they take a while to 'find' you with the new maps and you may not have that time when you first arrive- if that is a problem with strange roads.

Most owners or certainly THIS site will give you specific driving instgructions to a villa and there are sites giving help for new British Driversssssss.
Stilck witgh that and when at the villa you can put the new maps in your satnav and have time to get it up and running.

I did just that last November, it was a bit frustrating trying to get that first fix. Its amazing that the whole of USA can get on one microsd card with 2 Mb.