Nagano in Winter.
I spent a number of months on the hills at Nagano in mid winter. It was quite a good experience. Found myself boiling water seperately for food and bathing. Paper walls and concrete I doubt were meant to coincide, but it did highlight changes in the village that seemed characteristically unchanged by other influences.
Recommendations: Let your friend's/house host's family walk in to the house unannounced and take your picture.