Take the Aerobus (5.9€) which is direct until Plaça Espanya. At Plaza Espanya, take the metro (Line 3 / green line) in the direction of Trinitat Nova and then get off the next stop at Poble Sec.From the train station at Sants Estació
Take the metro (Line 3 or green line) in the direction of Trinitat Nova and then get off at the Poble Sec stop.
Exit the metro following the signs for Sortida Parlement. Cross Avenida Paral.lel and find Radas street. Walk along the Radas street until number 42, the main entrance is around the corner.