I helped this couple move earlier this year. They had the dining table + chairs, lounge chair, sofa and area rug and lots of art. Envisioning using this long wall as an art wall, I suggested bright white walls and minimal white furniture as not to detract from the art. We went with the three Ikea bookcases since I knew much of the art needed framing and I know how much that can cost.
I love the way the bookcase came out. Since these shelves are pretty deep I was able to layer some of the smaller books to give it more depth and interest. They said to do it whichever looked best, not necessarily by subject or author.
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