The restaurant where JKS ate is named Prince Eel, in Sinsa-dong, Seoul. It's a pricey restaurant specializing in table grilled Conger eel and unagi. However, all the reviews of the restaurant state that the quality of the eel is well worth the price. This is a picture about the restaurant.
Address: 164 Road, Gangnum-gu, Seoul 35-4 eonju
Sinsa-dong 646-16 First floor
Hours: 12:00 to 22:00