Best Asturian tapas/cide bar in Barrio Gotic
"Best" sidreria is all about atmosphere which all of them have plenty of. Go down to c/Merce and hit La Socarrena, Tasca el Corral and Casa del Molinero. On c/Ample is El Tonnel. I haven't been to any of them in quite a few years. And if they don't meet your expectation, go to the nearby Bar Celta or La Plata for some octopus. Can't go wrong with this neighborhood of Barcelona.