Located on the stretch of beach known as Sant Sebastià, Bestial is easy to find: It is right under Frank O. Gehry’s giant fish sculpture, adjacent to the Olympic Harbor and Hotel Arts. Bestial takes its name from the mural of insects by artist Frederic Amat that decorates the large glass walls. The atmosphere is generous and relaxed, underscored by the massive elegance of the long tables and the expansive terrace that offers views of the Mediterranean.