I tried to drop by while strolling around the Kodaira/Kokubunji area, but it was closed. I didn't know you need a reservation made between 6 months and 3 days in advance to see the inside (maybe I didn't check the info enough?), so I was disappointed. In my case, plans sometimes change suddenly even after I've reserved, so even if I'd known it was reservation-only, I wonder how it would've turned out.

You can't enter unless you apply in advance.

I only passed by in front. According to people in the neighborhood, you can't visit without a reservation. It's usually closed. Apparently old farming tools and such are on display…

I went on an opening day during opening hours, but it wasn't open. Even though the opening days and hours were posted on site.

Reservation only, small and cozy