A & C is correct about LEVC and the parking, although I did walk into the GA terminal from there. Sometimes the re-fuelling can be slow too, a lot of flight schools use it and you may need to queue up.
Apart from that I enjoyed flying there. My only advice in addition to 172's very valid one about NOTAMs re LEVC is make sure you have the ground plan. You will probably be told to taxi to one of the many holding points there and you need to know where they are. If you need help finding the site with this info pm me.
I also agree that VFR flying in Spain is very pleasant and recommend it. Maybe if you post this in the Spanish forum you will get more knowledgeable info by the way. A lot of them seem to speak English
