1.From the main train station(Gara de Nord), use the Tram Numer 1 and get off at he 4th stop called Cathedral (“Catedrala”). From there check the maps below for the directions to the hostel.
http://www.freebornhostel.com/wp-content/uploads/2011/05/harta-pictograma1.jpg
2. If you are arriving from the airport there is a bus (the E4) that leaves every hour from there to the center.It will leave you at the bastion ( the final stop of the bus ) and from there it's a 10 minute walk to the hostel.