This model using visual concept DOJO from Samurai Siege Game. You may visit my site at http://adhicipta.com/isometric-low-poly-dojo/ (In bahasa).
This looks just like it could be a physical model (especially the larger image on the page you linked to). I feel I could put out my hand and run my finger down the slope of the roof. Terrific job :-)
Very nice, love the presentation!