set of 3 rectangular mirrors

I'm thinking to buy the Set of three mirrors for $29 from KMart, as we have many blank walls.
I'm wondering where to hang them?
They are about 92cm x 26cm.
In my lounge, I have a large blank wall, which is directly opposite a large window. If I hung them here, they would become the focus of the room.

I have two thin hallways (curves in an L shape) which never get any sunlight.
Should I hang them here?

In my kitchen I also have a large blank wall, with a lot of open floor space in front of it, and it's perpendicular to a large window. I could hang them here, but it would reflect the bench top and laundry door and kitchen bin... This side of the house doesn't receive much light.

OR I could just divide the mirrors and use them in all different areas of the house.

WDYT?
(TIA)

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