Gui Gui is a restaurant on the second floor of an udon shop near City Hall Station in Seoul, serving grilled fish such as mackerel, hairtail and Spanish mackerel along with braised dishes and fish soup. Ordered Spanish mackerel and mackerel are grilled evenly, and braised mackerel or hairtail, saengtaetang and altang arrive with side dishes. Seats overlook Seoul Plaza, where the grilled fish and soups can be eaten with a meal or with drinks. Prices are on the high side.