An upstairs room or object is situated on a floor of a building that is higher than the ground floor. Marsani moved into the upstairs apartment. an upstairs balcony
on or of upper floors of a building; "the upstairs maid"; "an upstairs room" on a floor above; "they lived upstairs" with respect to the mind; "she's a bit weak upstairs
The upstairs of a building is the floor or floors that are higher than the ground floor. Frances invited them to occupy the upstairs of her home. downstairs. the upstairs one or all of the upper floors in a building
If something or someone is upstairs in a building, they are on a floor that is higher than the ground floor. The restaurant is upstairs and consists of a large, open room The boys are curled asleep in the small bedroom upstairs. downstairs