next room; adjoining room
Refers to a room directly next to or connected to the current one, often in a house, apartment, or building.
隣室から音楽が聞こえてきた。
I could hear music coming from the next room.
彼は隣室で休んでいる。
He is resting in the adjoining room.
This hotel room has an adjoining room next to it.
I could hear voices talking from the next room.
An international student lives in the next room.