noun
small balcony; service balcony
A small balcony, often attached to an apartment or hotel room, typically just large enough for an air conditioner unit or a few plants. The English term 'service balcony' is not widely used in this sense.
from English service balcony
この部屋にはサービスバルコニーが付いています。
This room comes with a small balcony.
サービスバルコニーに洗濯物を干す。
I hang laundry on the service balcony.