A no-nonsense local bar on Calle Isaac Peral, Bar Madrigal does manzanilla by the copita, decent tapas (the chicharrones de Cádiz are particularly good), and lively atmosphere from late afternoon through to midnight. The interior is small, tiled, and standing-only on busy nights; tables on the pavement outside.
Prices are local prices, not tourist prices — a copita of manzanilla and a tapa for a few euros. Cash preferred.