The building uses local materials and is designed in traditional Balinese architecture complemented with modern décor and perfect lighting offering romantic and elegant atmosphere. (lakotour.com)
This would again fall short of the heat storage goal, but would be simple and cheap, and might make use of local materials for the wall? (builditsolar.com)
They are healthy buildings with low carbon footprints, built from local materials. (treehugger.com)