This is the 9755th most frequent Korean word.
고시원의
"Relating to a goshiwon (a small, cheap rented room in Korea)."
In this sentence, '고시원의' is used as a possessive form to describe '방' (room) belonging to a '고시원' (study hall).
고시원의 방은 작지만 기본적인 가구가 갖추어져 있습니다.
The room in the study hall is small but equipped with basic furniture.
Here, '고시원의' is associated with '입구' (entrance), indicating that the entrance belongs to a '고시원' (study hall).
고시원의 입구에서 신발을 벗어야 합니다.
You must take off your shoes at the entrance of the study hall.
In this context, '고시원의' describes '규칙' (rules), signifying that the rules are of the '고시원' (study hall).