The assignment or allocation of rooms (e.g., in a hotel, dormitory, or training event).
研修の初日に部屋割りが発表された。
On the first day of training, the room assignments were announced.
ホテルの部屋割りを変更してもらえますか？
Could you change our hotel room allocation?
学生寮の部屋割りは公平に行われた。
The dormitory room assignments were carried out fairly.