We spent 3 days in Jeju, 2 of them with Victor, who showed us around and was very helpful and nice. He was also fun to talk with, his explanations were interesting and we sure recommend every visitor to take Victor's tour. 

Be sure to ask him to take you to eat San Nakji  (live octopus):) 

Thanks again from all of us! 
Ziv 
photo: women divers selling fresh seafood on the seaside