In colloquial Chinese, 爽 is extremely common as a one-word exclamation meaning 'awesome/satisfying!' — similar to how young English speakers use 'nice!' It covers physical comfort, emotional satisfaction, and general pleasure.
usage
不爽 (bù shuǎng) means annoyed or in a bad mood. 爽快 (shuǎngkuai) means straightforward/decisive when describing a person.