Post a picture of the entire wall. Is this a basement? Not sure you need anything in it until we see the entire wall

More photos please. It's possible that window fabric could be same color as upper wall paint. It's a decorative feature to complement what you have already.

A lively example, for quick look:

Bohemian Medallion Wallpaper, Red-Orange, Bolt · More Info

Alistair Red Medallion Wallpaper Bolt · More Info

Iris Coral Shibori Wallpaper Bolt · More Info

I’d leave it empty. It looks like a chair rail. I like that!

It would be helpful to see the whole wall. Without knowing all of the furniture/decor you already have in the space, I'd try some large leaning pictures instead of the artwork you have on the wall to the left of the window. Move the vase and other stuff to the right side of the window... it cuts the sofa in half...

Now that I see the whole wall - I'd do the leaning pictures and leave the rest empty.

I vote for leave it empty and less is more

Another leave it empty.

It’s not a basement and the window treatment is brand new. I’m just confused on this super long wall and what to do with it. It seems the majority says to leave it be.

I vote empty.

Maybe a string of tiny lights or leave it blank.

I'd leave it blank too.

Mentioned window treatment and I didn't mean you remove it, just cover with curtain fabric...

Empty for sure.

Empty! Easier to dust :)

Leave it empty. It will look like it was an intentional design.

Hi Vicki. I would love to help you. In order to give anyone advice, I would need

1) Photos of all 4 walls of this room

2) An inspiration photo of a room or rooms that you love.

Without this information, I am only guessing. One thing I will state is that I would not want to sit on that sofa, with a plant dangling above me and fear that those items could fall.

It appears that you have a tendency to feel that most spaces need to be filled with something....very common but not true.

Thanks!

Empty! Anything on it will make it look cluttered and only draw attention to it (in the wrong way).

I’d be inclined to have an art section like Sammy posted on the wall to the left (nothing hung on the wall and no objects) then no objects over the sofa and maybe 3 objects on the far right but they have to be of scale and proportion that makes sense. Lower and horizontal is better. Nothing that encroaches on the window.

Q. if that's the one wall with a ledge?

You might want to try treating it like a mantel, but it is too narrow to add much depth to it. Less is more, IMO. If it is too frustrating to put something together that you love, just let it be.

I've got 2 ledges in my guestrooms. A mirror is nice if you like what's reflected from the rest of the room.

Yes it’s a very long ledge due to the foundation. I moved the grouping from behind the couch. Here are additional pictures of what’s around this wall. I am ok with leaving it blank. I am not one who needs to fill every spot, lol!
Thanks for the advice so far!

I’m also needing another color here, I’m not fond of the orange.

Get some cats, they will sit on the ledge.

With all the gray and brown, you do need a good accent color. I'd use blue, like the matte on your artwork. When you're ready to change the gray wall paint, you'll have a lot more options.

Now to see all around -- you have nice things! and there doesn't seem a problem with ledge, or a pillow that only from where I sit doesn't look orange. ;) has a relation with dresser's stain.

Do you like peacock blue or teal? Q - where do you think you need color? - this has 2 sides -

PIFA-1500-005 Kilim Embroided Pillow 20''x20'' · More Info

Pillow Decor, Venetian Velvet Peacock Teal Throw Pillow 12x19 · More Info

Neat stair railing - solid could have a dressy type fabric to 'please' the style of dresser - do you want a blend with mat of art?

Velvet 2 Piece Lumbar Pillow Cover Set, Majolica Blue, 2 Piece, 14"x26" · More Info

Pillow Decor - Tuscany Linen Shockwave Blue Throw Pillow 12x20 · More Info

Is there a vibe of history in your wall items? maybe this traditional ruby/wine?

Velvet 2 Piece Lumbar Pillow Cover Set, Ruby Wine, 2 Piece, 14"x26" · More Info

I would probably put books there. But we are always looking for places for books.

Looks like a cozy room.

Thanks for the additional photos. Looks much better with the elements removed from over the sofa. But, they are still there....just moved toward the stairs.

When a room contains a lot of small items, it becomes cluttery looking.

You have a lot of good basic elements. You have a gorgeous modern stair railing. Your furniture is quite traditional, so the 2 will have to be melded.

Here is what I recommend:

1) Start with an inspiration photo. Always. Unless I know what you like, I am only guessing.

2) Post photos of all 4 walls of the space.

3) Make sure you have a good floor plan. (Is the furniture really positioned in the most functional arrangement?

4) Only then, can you start decorating.

Thanks 😀

I would leave it empty. i wouldn’t want to draw attention to it ….

Making it an art/picture ledge would be nice. Some inspos for you

Thanks everyone! I decided to leave it empty and I moved the small group elsewhere in my house.