The balcony is considered an integral part of the apartment. It must be used competently and functionally. It is not always appropriate to leave the entire area in a small apartment for storing unnecessary things. It is much more correct to make the balcony a continuation of the apartment and expand the usable space.
To make a room on the balcony, it is not at all necessary to break down the walls and complete a complete redevelopment. Whatever the area, the room can be made cozy and beautiful. For example, like this.
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All images obtained via Google Images and Pinterest (unless otherwise noted).