Oksudong Hwadeok Pizza Seongsu is a pizza restaurant in the middle of Seongsu that serves wood-fired pizza and pasta. The pizza is baked directly in the wood-fired oven, giving it crisp edges and a chewy dough. The eighth-floor dining room has full-length windows and a terrace with views over Seongsu, and the restaurant takes reservations. The spaghetti is good, but the portion is on the small side.