Zashiki (座敷 ざしき)
A zashiki refers to a tatami‐matted Japanese‐style room, and in particular a room for entertaining guests. A zashiki commonly has a Japanese‐style alcove called a tokonoma that holds decorative materials such as kakejiku (a Japanese‐style painting or piece of calligraphy) and a flower arrangement. In business, when you serve guests, you may use a Japanese-style restaurant with zashiki, or if you visit your boss's house, you may be guided to zashiki room. "Zashiki" is often called by adding "o" at the beginning which is used in polite expression.