Personally I think it’s fine as is based on what you have for the walls to the right and left of it. It’s often said it can be nice for the eyes to have a place to rest.

I see a LOT of stuff on the wall to the left of the empty wall. It’s packed full - on the table, under the table, above the table. You could take the hanging piece from there and put it on the empty wall.

I feel like there's enough going on with the rest of the room that leaving the angled wall blank isn't an issue - doesn't look awkward to me! But if it bothers you, perhaps you could try swapping that large painting over to the adjacent angled wall so that you're balancing the visual interest between the lower console table on the left with the higher up painting on the right.

I don't think anything is needed. You have the wall unit with things and the table arrangement on the left.

Hm. Anything you put on that wall is going to compete with the display you have on the wall to the left.

I’d be inclined to leave it alone.

If you do put something there it can’t be something in the same category as what you already have which is wall art.

Also you have several utilitarian things on that wall such as the thermostat. Which you might want to not draw attention to.

To my eye, less is more in this spot. I think I see the back of a chair so an interest floor lamp would be a nice addition there. Something with some interest. Then, a lighter bench and plant at that corner and possibly your wall hanging over the bench. Just not sure what that doorway leads to from the main room.

Lighter wood and baskets would coordinate better with the entertainment unit as well.

Thank you everyone! There is actually nothing on the other side of the cabinet, I’ve been moving furniture around all day and had an odd piece resting there lol!