Kuenley C.
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For foreign visitors wondering whether to visit this museum, I would suggest that you *first* visit the Edo Tokyo Open Air Architectural Museum (located on the west Chuo line, past Kichijoji -- a similar distance from Shinjuku) *before* seeing this one.
This museum is ok and fine, but basically you see the same farmhouse structure 25 times in a walking loop. Think, the village farmhouses from "The Seven Samurai". They're in different settings of course but pretty much the same inside, not much difference to the average eye (at least it seemed to me).
There are some volunteer folk activities happening here on weekends (basket weaving, hearth fire tending), and an indigo dyeing shop to visit. But by comparison, the Edo Tokyo museum has a far greater variety of houses, especially of the classic Showa era, that are more interesting in my view. Also, not that it's a lot of money, but the Edo Tokyo museum is a bit cheaper. And seems a bit better maintained.
See photos for what the houses here basically look like. It was pleasant enough to visit on an extra day I had. But for those with more limited time, I would suggest the above first. Best wishes!