a home from home
/ə ˌhəʊm frəm ˈhəʊm/idiom
a place where you feel as comfortable as in your own home
второй дом
Русский аналог: «как дома»
В американском — a home away from home.
“This little café is a home from home for me.”
“The hotel was a real home from home.”
“For students, the library became a home from home.”