La Castela is a true Madrid barrio bar: lightening-fast waiters, a generous free tapa with each drink. It offers delicious seafodd food and wine with a crowded and loud atmosphere. Some favorits are chickpeas sautéed with plumb grilled langoustines, the unctuous rabo de toro (bull tail stew, €12) and the almejas a la manzanilla (clams in sherry sauce, €12).