Do you own or is this a rental? The pix look a little stretched like realty ones. Since there is a rad between the doors, forget putting TV there. I'd keep the dining close to the kitchen and put the sitting/TV area to focus on the long wall. Start with the fun project of finding a knockout chandelier to hang from that pretty ceiling. Is there a fridge under the microwave? I see only one wall outlet behind the door and one above the counter, so you'll have to use extension cords and cord covers along the baseboards to have enough lighting here. Consider floating your sofa facing the long wall and TV. Then use a drop leaf table behind it for dining. You'll be able to open it all the way for entertaining. Anchor your seating area with a rug 2-3 feet wider than your sofa.

Try the home decorating forum. fir is not hardwood and will not wear well with heavy traffic. In a bedroom it would be easier I think. Are you bed ridden? A king sized bed is pretty large for such a small space. If you don't have any other furniture it could work I think, if you can get the box springs and mattresses through the doorway.

I‘d suggest adding a window treatment to create a balanced wall and room and skip anything in between. Just bring home mirrors and test various sizes and configurations. If you don’t mind unsolicitated advice, the blue bench and settee feel awkward/impractical. If interested, provide a picture of entire room and you’ll receive helpful advice.

Well, a painting can add some perspective and color.