Frommer’s books aren’t “written" by A.I., like so many others, or by travel writers who simply pop in briefly to a destination and then consider the job done. We use seasoned, locally-based journalists like Peter Barron (formerly of the BBC), along with writers who live part-time in Spain, like Patricia Harris, David Lyon and Murray Stewart. The four of them spent months checking out all of Spain’s best hotels, attractions, shops, wineries, and restaurants in person, so th...