I think your room is perfectly suited to such a layout. Even a small bar cart or wine chest on that end of the room would help define the space. It's a look I would have done in my own living room had I been able to bear the thought of giving up my very comfortable sofa where I sit in front of my windows every day!

Thanks! I'm hoping it will be a cute space!! That doorway opposite the doorway is a little redundant, but it leads into the entryway/front door, so I'm not sure how it would feel walking into the back of a sofa. But maybe I am wrong! The condo is a converted 2-bedroom, where they turned the dining room into a living room, and the living room into a 2nd bedroom, which explains why the space is so awkward! What would anyone think about doing a sofa along the window/in front of radiator, and putting a chair or pouf under the TV (between built-in and bottom doorway)? Or a sofa along the right-side wall (where I have the random door/beach photo leaning) with a comfy accent chair top left next to window? Would something like this work at all or am I crazy?

Why not put a pair of comfy armchairs flanking the fireplace? Style the shelves with 1/3 books, 1/3 large decor items and 1/3 open space. Are there any outlets there for lighting? Put TV on the long wall where the black chair is. Set it on a credenza 25% wider than the TV. Float a small scale sofa perpendicular to the stair and fireplace with a coffee table in front of it. Put a console or sofa table on the wall behind the sofa with two lamps and art. Leave a 30" traffic path between sofa and table if possible. Art 5" above the mantle no wider than the firebox opening. No need for a ceiling fixture; just upgrade lighting to 4000K LEDs for daylight feeling night or day. Is there lighting in the stairwell? It needs some. Straight leg chairs will be best because splayed legs will block the traffic path and be hazardous. Not sure an egg chair will work there but its fun. Too tall and big I think. Go for a low profile like the green one and you can fit a pair of them in.

You might try flipping the dining room and living room areas. We think the TV might work well on the blank wall where you have the dining room. Then we might place the dining room table on the angled wall next to the kitchen. See our designs here for a few other design ideas.