I, suppose you knew that you were preaching to a convert. Spain cannot be a Country for investors & certainly not in our life time.
I, personally do not consider a person buying a place for themselves as an investor in a bigger scheme of things. A bigger investor whose funds can make a difference will prepare an in depth due diligence and will walk away. As they are hard nose investors who do not get swayed with the sunshine or a glass of Rioja.