room for rent; rental room
Refers to a room or office space available for lease. Often seen in real estate contexts.
There is a room for rent near the station.
貸し室の広告をネットで見つけた。
I found an ad for a rental room online.
Standard spelling with okurigana, clearly indicating the reading.
Alternative spelling without okurigana; less common but still used in signs or advertisements.
Compound of 貸し (kashi, 'lending') + 室 (shitsu, 'room'). The okurigana spelling 貸し室 is the more common modern form.