This space is generally called "tokonoma" ,which is a built-in recessed space in a Japanese style reception room .
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where flower arrangements or hanging scrolls are supposed to be displayed.
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I guess it is something like "niche" in English.
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For more information about "tokonoma",see here:
http://en.wikipedia.org/wiki/Tokonoma
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I will upload a remixed one which
includes a hanging scroll in the near future.
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thanks.