The easiest way you get here from the airport is to use the airport link from Suvarnabhumi airport to Phaya Thai BTS station (17 minutes with Phaya Thai Express & around 45 minutes with SA City Line). Then, go from Phaya Thai BTS to Asok station (around 20minutes). After you enter Soi Sukhumvit 19, walk for 2 minutes, the hostel is located in the 1st alley on the right hand side. There's a blue sign of Friend's Massage at the front of the alley. Asok montri hostel is the 1st house on the left side in there.