Every Barcelona resident will know the famous Casa Camper. What some may not know is that its basement hides Dos Billares, a hidden and clandestine cocktail bar that reminds us of mid-20th century Hollywood. Its own name suggests it: two billiard tables characterize the place. Archie, the bartender at Dos Billares, will be happy to greet you, ask you a few questions and decide on the cocktail that best suits your palate. And we warn you: he never fails.