Twosome Place Hongdae Walkable Street is a cafe in Hongdae that sells coffee and cake. Order a cafe latte or a decaf oat drink at the kiosk and drink it at the seats on the third and fourth floors. After ordering on the second floor, you go up to the third and fourth floors, and the fourth-floor restroom requires the password written on your receipt. There is no elevator, so you have to go up and down narrow, steep stairs, which is inconvenient when carrying a tray.