Hidden Illet is a cafe on the second floor of an alley in Bukchang-dong near City Hall, serving drinks and desserts made in-house. Its menu includes strawberry jumulleok, tissue bread, and coconut bingsu, which are made on the premises. The space has a basalt counter and a projector showing wave footage, with seating from a single window seat to group tables. It is reached only by a second-floor staircase, which makes access difficult.