Cake Shop Seoul is a club in Itaewon, Seoul, located on the basement floor of 134 Itaewon-ro in Yongsan-gu. The music you hear depends heavily on the DJ's selections, and the sound is louder than at other clubs. People stay and dance until around 4 a.m., even after 11 p.m. Smoking is allowed inside, so cigarette smoke lingers.