A tatami mat is spread in the room of a traditional Japanese house. A new apartment can sometimes have flooring room combined with tatami room. As for senior citizens in particular, rooms with tatami mats seem to calm down from the old days. The tatami mat is made of plants called the rush and smells good. It seems to be effective at stabilizing a feeling with the fragrance. For a fact most Japanese people love the smell of a new tatami mat. “Negoza (rush mat)” is a thin tatami mat made with rush, is used laying on the mattress. Since it is not filled with heat during sleep, you can sleep feeling cool.