no vacancy; full occupancy (all rooms occupied)
ホテルは連休で満室だったため、予約を取れなかった。
The hotel was fully booked during the holiday, so I couldn't make a reservation.
そのマンションは常に満室だ。
That apartment building is always fully occupied.
満室のため新しい入居者を受け入れられない。
We can't accept new tenants because it's full.