The Chinatown referenced here is located in Yokohama, south of Tokyo and is served by the Motomachi-Chūkagai station.
Chinatown is a hangout spot unlocked after reading the magazine "Chinese Sweets". This magazine is a reward for the "Part-time Job, Full-time Hell" Request. The fare to ride into Chinatown is ￥580. This location can be visited to increase Confidant rank points. Confidants that can be brought here are Ryuji Sakamoto, Makoto Niijima and Futaba Sakura.