Is Haikou Marriott Hotel free to go in and out?

Not casually. Haikou Marriott Hotel is a five-star hotel. This hotel is very strict about protecting customers' privacy. You need to register to enter the hotel, and you can't just go in and out. Haikou Marriott Hotel is located on the beautiful west coast of Haikou City, Hainan Province, China, adjacent to Hainan International Convention and Exhibition Center. It is the first flagship business hotel of Marriott International in Hainan Island.