The downstairs was rented to a bookseller.
They rented the room on the second floor to a student.
One of the rooms on the second floor is used for office purposes.
We have children's rooms on the second story.
There are about so many books upstairs.
the ground-floor entrance is kept locked
There is a restaurant on the top floor.
That is being sold on the sixth floor.
an outbuilding with a single story
an upper story built onto a flat house
Books and stationery are sold on the second and third floors respectively.