From the Airport of Barcelona by bus:

The cheapest way to get from the airport is by bus number 46. Once you arrive at the Avinguda Paral·lel-Llançà stop, you have to get off and walk 600 meters to the hostel.

From the Airport of Barcelona by metro:

Another option is to take the Aerobus to Pl. Espanya and then take the metro on the green line to Poble Sec. Once you have arrived at Poble Sec metro station, you just need to head west toward Av. del Paraŀlel and then Turn left onto Carrer de Ricart up to our facilities.