Wow, about as far South West as you can go.!
The place I was trying to remember is in Northern Spain, in Lerma near Burgos. Here is the link.
http://www.hotelalisa.com/lerma%28i%29.html The parking is underground so not sure of height clearance on your vehicle. However if it was of interest to you most hotels in Iberia speak some form of English or better you could drop them an Email with your request for max vehicle height - it will be in Metric of course.
Two other thoughts are to stay in one or more of the state run hotels. They are always nice places (former monastries, castle and the like) for a bit of luxury. In Portugal they are called Pousadas ( here is their website
http://www.pousadasofportugal.com/?gclid=CNbpzOan_rICFRPLtAod4HcA-A) The equivalent in Spain is the parador ( here is their website on the page for Zafra- we stayed there a few years back and had a superb room .
http://www.parador.es/en/cargarFichaParador.do?parador=092&LANG=en&SM=true&fechaDesde=&fechaHasta=&codigoIdiomaOrigen=es)
You will find the driving very easy compared to Britain except in built up areas off motorways and main roads.
IF you were thinking of going anywhere near Barcelona and like spectacular sights, I can recommend Monserrat
http://www.montserratvisita.com/.
Drop me a pm if you have other questions

If that hasn't helped drop me a PM with specifics!