Depending on what they reflect I like to put mirrors in darker smaller areas ( possibly two or even three ).

Do you think a mirror and one canvas would work? Or is it creepy having a picture of ourself there? Thank you for the advice!

I think one larger mirror in that dark space to reflect the light.

I don't know what the decor is like in the living room, but how about something with this kind of shape?

Or something like this hung vertically.