a home from home

Từ điển Oxford Advanced Learner 8th

a ˌhome from ˈhome idiom
(BrE) (NAmE a ˌhome away from ˈhome)a place where you feel relaxed and comfortable as if you were in your own home
•The guests are made to feel that the hotel is a home from home.
Main entry: ↑home_idiom