Mandarin Oriental, Bangkok is a legendary hotel situated on the banks of the Chao Phraya River. While it doesn't have a dedicated discotheque, the hotel offers a lively bar called 'The Bamboo Bar' that features live jazz music and a dance floor. The Bamboo Bar is known for its sophisticated ambiance, talented musicians, and a wide selection of cocktails. The hotel itself offers luxurious rooms, a riverside pool, and multiple dining options, including the famous Le Normandie restaurant. If you're looking for a hotel with a classy and elegant nightlife experience in Bangkok, Mandarin Oriental is an excellent choice.