One of my favorite beaches on Mallorca is Es Comú de Muro. The unspoiled stretch of fine-grained white sand hides behind a vast dune landscape which is part of the protected Parc Natural de s’Albufera. As it happens this is also the place where you find one of the best beach clubs on the island. Get a seat on the shaded terrace of Ponderosa Beach and dig your toes in the sand.  On a sunny day the restaurant quickly fills at lunchtime. Ponderosa Beach is famous for its rice dishes and seafood…