noun
caretaker of a villa
A person employed to look after a villa or second home, especially when the owner is away.
別荘番の老人が、冬の間も庭の手入れを続けていた。
The elderly caretaker of the villa kept tending the garden even during the winter.
管理人 is a general term for a manager or caretaker of a building or facility, while 別荘番 specifically refers to a caretaker of a villa or second home.
Compound of 別荘 (villa) and 番 (watch, guard, caretaker).