Sentence examples for a night in from inspiring English sources

"a night in" is a correct and commonly used phrase in written English.
It is typically used to refer to when someone chooses to stay at home for the evening instead of going out. Example: "After a long week at work, all I wanted was a night in with a good book and a glass of wine." In this sentence, "a night in" indicates that the speaker plans to spend the evening at home, relaxing and enjoying some quiet time.