Spain is a worthy visited country in the world and I have been there quite a few times. I think once you're in Spain, you can't miss
costal del sol where you can enjoy a comfortable sunbath and
barcelona where you can taste the really sandy beach. And
tenerife is the summer resort, you can go to there in summer. People of Spain are mostly friendly and hospitable and you won't be worried about anything in your travel.
Hope everyone have a good time in Spain!