In Seongsu, Daiso Hanssem Mart Seongsu (118 Seongsu-iro) is open 6am–11pm, and

Seongsu 2-ga (106 Seongdeokjeong-gil) 10am–10pm. With its handmade shoe street, Seongsu means lots of walking. The double-sided sneaker brush is ₩1,000, rated 4.8. The early opening means you can stop by before cafés.