Use Airport Limousine Bus
  Jeju Hiking Inn is located in Seogwipo City, only a 3 minutes walk from the harbour and the Limousine Bus (line 600) that connects you to Jeju International Airport.
This bus runs every 10 minutes from 06:20 ~ 22:00

How to Get Jeju Hiking Inn
Take a limousine bus from Jeju International Airport (1 hour, 20 minutes / Fare: 5,500 won) → Get off at Seogwipo bus stop (Sunbeach Hotel)→ Walk ahead in the direction of Cheonjiyeon Falls and it’s on the Right (a 3-minute walk)