Good advice from Logan, rent first. Madness to buy in an area you don’t know. So you look on the internet…how do you know what the area is like, every town in the world has rough areas.
As for Spanish education, it is stifling, lot of work from textbooks and just cramming. Many private schools are linked to the Church. On the CDS many Spanish (who can afford to) are sending their children to the international schools which offer bi-lingual courses.