hitou-tei is a tea house having a counry style which constructed in about 1771-1801 (Edo Period).
This niche is a unique type of Toko-no-ma called Hora-doko whose edges covered with soil without timber.
The wall is artificially colored soil by sabi (rusts) so that the wall is called Sabi-kabe.
The soil has mixed with Susa (straws) for combining soil and it causes the wall shining when the sunset.
Inside
Ceiling
The variation of the ceiling should be noticed.
Each of three ceiling have different materials, types and grade which shows the state of formality.