I'd put a fireplace on the current TV wall, and then move the TV to the next wall over. If you want fireplace tile running all the way up, you can have it, and the TV will be at a much better angle for most viewers (and down a foot or so is better too).

You have tall windows and a loft, a lot going on in a relatively small space. I think a fire place to the ceiling would be nice but I’d make it the same color as the walls only textured in some way so it doesn’t bring too much more “noise” to the room.

I raised your drapery panel

Added a fireplace

Added a larger TV. It should NOT be tilted.

I added a larger fan that is mounted a bit lower.

Lots of different rugs will work with your floor.

For me accent walls need to have areason and connection to something in the space so not usually decided before all other things arw considered , I think the doorway at the end of that dividing wall keeps you from having much on that wall but Check out Ikea Besta for some really cool ideas for a wall with a TV This just one idea it will give you space for some storage the TV and maybe even a bit of display and allows for a bigger TV . DO you need a FP for heating? If not I rrely like a FP and TV in the same space

You don't necessarily need a feature wall or accent wall. You can easily just add an electric fireplace below and a TV above. Here are just a few images with visuals to aid you with what you might want to do with your fireplace/feature wall.

Red Mountain · More Info

Lake Shore Drive · More Info

Earthy Mountain Modern · More Info

Thank you i love that rug white w gray you have shown where is that from? The floor is so busy in the home i bought and im really having. A hard time visualizing . I would like a fireplace possibly a gas one as i am hearing the electric don’t really help with heat. Im finding the home to be really chilly and would love the added warmth. So do you think the last fireplace you posted would be too much and should i just do the fireplace with tv on top or have shelving on each side.