From the bus station:
Take bus number 3 or 33.
From the train station:
Take bus number 3, 4, 6, 7 or 8.
On any of these bus routes, get off at Gran Via de Colon, number 1 bus stop, near the Cathedral. Then take the street on your right, called Carcel Baja. Continue straight into the pedestrian-only area to the street (called Capuchinas) until you get to Plaza Trinidad. You will see Caja Rural bank at the corner to your right. There, go the third street on your right; it's called Conde de las Infantas. On the corner, there is a bar called Reca. We're located near the end of the block on the left at numbers 15-17. The sign over the door says 'Funky'.
Alternately, a taxi from the airport should cost around €25.