Widely considered Madrid's most sophisticated cocktail lounge during the 1940s and 1950s, it attracted famous drinkers like Hemingway and Ava Gardner. The atmosphere still retains a flavor of those glorious years and the photos on the walls are proof of its illustrious past. Despite the glass front that overlooks Gran Vía, the curtains make sure that you're discreetly hidden from the passers-by as you sip your elaborately prepared cocktail.