I am from Madrid mate, but living in London for three years now :lol:
Not many star wars vintage stores in Madrid, but there is a forum you might want to check.
http://www.starwarsspanishstuff.info/foro/index.php
You will meet a lot of cool collectors, most of them from Madrid. They are meeting up quite often and arranging events and stuff. If you need me to introduce you to some of them, let me know