By Anita Draycott
When the sun goes down Old San Juan pulsates to Latin rhythms all over town. On Calle San Sebastian, join the locals at the unassuming Colmado las Riberitas, a Pepto-Bismol-coloured grocery store when you can buy a Medalla cerveza and dance in the street. Need a few lessons? Head to The Latin Roots, near the Sheraton Hotel, for free salsa, merengue and bachata classes nightly Thursday through Sunday.