Take bus number 615 from the Helsinki-Vantaa International Airport to the Helsinki Railway Station. Regional Single ticket fare 3,60 EUR (2006) and it is valid also in trams for 80 minutes. Walk 300 meters to Mannerheimintie Street (west) and you will come to Lasipalatsi tram stop. Take tram number 4 to Katajanokka direction (southeast). Leave the tram at the 7th stop (Vyökatu) and you can see Eurohostel in front of you behind a small park.