From Barcelona Airport
You can catch the AEROBUS and get off at the last stop: Plaça Catalunya. Once there, you can take Metro Line 1 (RED Line) and get off at the stop ARCO DE TRIUNFO (only TWO stop from Plaça Catalunya), from here you are a few minutes away walking!
Another option is to take Rodalies RENFE (train) and get off at the train station ARCO DE TRIUNFO. We are a few minutes walking away!