From the article:
Perched on the periphery of Kaziranga National Park, the Diphlu River Lodge houses 12 quaint cottages that are made using natural materials such as bamboo and wood. It's where Prince William and Kate Middleton chose to stay during their visit to India. Along with safaris, the retreat enables guests to participate in activities such as elephant bathing, Brahmaputra day cruises, village and tea garden visits and rubber plantation walks.