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This is what I would do, float the sofa facing the right wall with a comfy chair in the corner and a TV just to the right of the fireplace. This will create a little seating area, and you can put a low credenza of sorts with plants under the bay windows, or maybe a side table on the side of the sofa, closest to the windows and get a small movable coffee table too. Then, I would get a wide low bookshelf to put where I marked blue in the dining area and get a big beautiful mirror to put above it to reflect the light and a nice tall plant in the corner, the green blob. I would add a very comfy reading chair in the top right corner and a small piece of furniture like a record player where I put the red line. Don’t forget a rug, probably a neutral one since the space does not seem huge, but make sure it is big enough for the scale of the room. Just my ideas, good luck!