separate room; another room
special room
面談は別室で行われた。
The interview took place in a separate room.
体調不良の生徒は別室で休んでいた。
The unwell student was resting in a separate room.
重要な話があるので別室に来てほしいと頼まれた。
I was asked to come to a separate room because there was something important to discuss.