Authorities have launched an investigation into the five-star Quinter Central Nha Trang Hotel, located in the resort commune of Nha Trang, following reports that its massage services may be linked to prostitution.Authorities have launched an investigation into the five-star Quinter Central Nha Trang Hotel, located in the resort commune of Nha Trang, following reports that its massage services may be linked to prostitution. VnExpress English