A bedroom: a room used primarily for sleeping, typically containing a bed and related furnishings.
寝室の窓から朝日が差し込んだ。
Morning sunlight streamed in through the bedroom window.
寝室を片付けて新しいベッドを置いた。
I tidied the bedroom and put in a new bed.
子供の寝室は2階にある。
The children's bedroom is on the second floor.