Welcome to the forum, Yes there a lot of horror stories. But there far more happy onces too. Its just that ones dont get posted as they dont feel the need or happily sipping G&T.
Please use the forum to prepare a check list of do & donts. Dont get sucked into s;ick marketing/sales talk or book inspection flights visting a property show.
Spain is a wonderful Country to live and to enjoy it fully learn the language and immerse in the Culture. JUst dont go there for Sun, and cheep drinks.