Not mysteries, historical, but I like the Captain Alatriste novels by Arturo Perez-Reverte. They're short, and bloody, and Spanish, and Perez's mysteries were also pretty good. If you haven't read The Places in Between by Rory Stewart it's extraordinary and seems perfectly readable on the beach, and Absurdistan by Shteyngart's pretty funny. You gotta like a novel where the author includes himself as a character, and then makes himself unlikeable.