Mandarin Oriental in Bangkok. is a luxury five star hotel in one of the world’s most exciting cities, we enjoy a reputation for style, service and excellence. A haven of calm on the banks of the river, Mandarin Oriental, Bangkok is a truly remarkable hotel. This iconic hotel has reopened the River Wing following the largest renovation in our 147-year history. This stunning transformation has further enhanced the accommodations and facilities in our iconic hotel, while maintaining our classic, Thai-influenced elegance and unique resort style.