The long version. Two nights in Hoi An buy you something the shorter packages cannot: a morning at My Son, the Cham holy land in its jungle valley, with the dance performance at the site, and an afternoon in the villages — Tra Que's herb beds and the basket boats at Cam Thanh.
From there it moves. Ba Na Hills and the Golden Bridge on day three, then north to Hue by way of Lap An Lagoon for the Imperial Citadel, Thien Mu and Khai Dinh. The last morning is a dragon boat on the Perfume River, the incense village at Thuy Xuan and Dong Ba Market before the flight.