Strange, I thought I had replied to this. :-/
Anyway... This is a very nice creation, Brickster. I really like the color combinations, they work really well together. The structure itself is well done, and is easily recognizable as Japanese. The interior is also cool, I like how smooth everything is, and I like the way the stairs are done. (I actually did something similar with my Black Owl Tavern)
The things I don't really like though, are:
The black 1x2 slopes on the ends of the roof. I know the effect you're going for, but I don't like the way they look. I could just be a personal taste, though.
The lime green on the stairs. I don't really like those, mostly because it's the only thing in that color in the whole building, and seems to clash.
I also think it would look better if you would have used a smaller baseplate, so that there wasn't all that extra room behind the building, that or maybe move the whole structure to the back of the base plate, and extend the path.
Overall, I like this, and hope to some day make some sort of Samurai creation like this myself. :-)