An indoor unit for an air-conditioning apparatus and an air-conditioning apparatus that include levers of a decorative panel operated through insertion hole portions, and then move vertically in the insertion hole portions by the gravity, to thereby be temporarily hung on the hooks. The levers are kept holed on hooks. The indoor unit for an air-conditioning apparatus includes a casing, a decorative panel mounted on a lower surface side of the casing and having an air inlet formed therein, the levers mounted so as to be opposed to each other on opposed two sides among four sides forming edges of the air inlet of the decorative panel, and the hooks mounted at an opening portion of the casing, to allow the levers to be hooked thereon, respectively.