We stayed three nights here in order to visit Barcelona. This is one of the best sites we've ever used in Europe, barring the fact that it can be a tad noisy at night. Take earplugs if this might be a problem. Other than that - it's top class. The bus is currently route e16 from right outside the gate. every 30 min Mon-Fri, hourly at weekends, either 1hr15 or 1hr30 journey respectively and about 5€40 single fare.