The glasshouse-like garden restaurant has classy museum looks but is one of the best budget places around. There is only one dish, guksu (noodle soup) with generous servings of Jeju black pork and lavished with green onions. Luckily it's great.
From Seonsan Ilchul-bong, turn right on the restaurant street until it becomes a path following the coast; Seongsan Noodles is down a driveway on your right.