The hostel is located near the Barcelona Sants train station and the L1/L3/L5 metro lines. The historic centre of the city and Plaça Catalunya can be reached in around 10 minutes by train. Camp Nou, Plaça Espanya, Fira de Barcelona, Poble Espanyol, Palau Nacional, and CaixaForum are all just a 20-minute walk away. While Sagrada Familia, La Pedrera, Casa Batlló, Port Vell, and many other sights are within a 15-20 minute metro ride from the hostel.
RENFE is fastest way to reach the hostel. Single ticket from airport to the Sants station costs 4.1€, alternatively you can use T10 or Hola BCN card. The train runs every 30 minutes (6:00-23:00) from T2 terminal. The name of the stop you want is Barcelona-Sants (3 stops, 20 minutes). The hostel is just in a 3 minute walk away from the station.
You can take metro from both T1 and T2 terminals of Barcelona Airport. Single ticket costs 4.2€. Alternatively you can use Hola BCN card. The metro runs every 5-10 minutes (05:00-00:00). The name of the stop you want is Sants Estació (L5), it is located inside the Barcelona Sants station. The hostel is just in a 3 minute walk away from the station.
If you arrive at the airport at midnight or later, during 23:30-5:30 night buses N16, N17 and N18 operate between airport and the city. Single ticket costs 2.15€, alternatively you can use T10 or Hola BCN card. The name of the stop you want is Plaça Espanya. The hostel is located within a 18 minute walk from Plaça Espanya.