not remembering the room...I'm thinking there are windows here. You could build a window seat and add cushions_ could be build inexpensively; in your spare time, of course:)
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gigantic artwork. Less to dust; perhaps a rectangular table below with a couple of candles etc
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Add blinds or other window treatment
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Electric fireplace
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cluster of wall art
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wainscoting or a chair rail can minimize the wall space, and add interest
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ground it with a rug/downside, cleaning might be tougher
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A large picture with your wall sconces and metal plate. We Can paint them
Or add an easy care real plant
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