Badang 1M Pub&Cafe is located nearby Sehwa beach in Jeju Island.
You'd know that it's not easy to find places opened till late at night in Jeju if you've traveled there before. They sell homemade drinks and foods. Their Tteok-galbi is great to take the edge off hunger.
This is a very relaxing place because it has a view of the sea and it's not so crowded. Also the owners are very kind. They run an off-road jeep riding tour so if you are interested, visit here, grab a bite and have some fun.
Address
1486 Haemajihaean-ro, Gujwa-eup, Cheju, Jeju-do, South Korea