Top 3 Hostels in Barcelona

1. Barcelona Dream Be Hostels: Just 15 minutes from the centre of the city "Plaza Catalunya" and right opposite the subway

2. Barcelona Mar Be Hostels: in the El Raval neighborhood and very close to everything

3. Barcelona Urbany Hostel: A MUST stay as it has an indoor pool, sauna, and jacuzzi. It is father away from the centre as it is a newer hostel but still close to the subway. 

For more information look at Trip Advisor and Rail Europe 

(Photo Cred: http://www.hostelsinbarcelona-hostels.com/img/cabeceraBarcelona.gif)