Not 100% sure but to me this looks like the new bridge in Vang Vieng and, if that is true, the picture is either taken at the Thavisouk Resort or at the brand new "Villa Vang Vieng Riverside" which is located at the road leading to the bridge which incidentally is a toll bridge. In the "good old times" before the bridge was built there was a bamboo bridge for bikes and larger vehicles like cars and tek-teks had to drive through the river which was only possible during the dry season.