I have a few thought... first, you could use a console behind sofa with a lamp. That will give some height to the center of the room and a great exfra surface when entertaining and if you need storage, get one with a cabinet or drawers. Or, you can use a side table and hide that blue box and put a lamp on top to add height. Then, use that great big wall and do a “gallery” wall with photos or artwork. There are tons of gallery wall pics all over the internet. Good luck!

How would you suggest the gallery wall do place? Just above the couch or along the whole wall?
I'm not crazy about the console or sideboard idea because we don't need any more storage or surfaces and since we move the couches often we would have to store the console in another room to clear up space while we're entertainging

As an alternative for the walls, you could do 3D textured wall paper that's different yet elegant. Or you could do a custom glass wall mural of any image or design you like. https://www.houzz.com/projects/1258135/wall-decor

That's an interesting idea! I had never considered wall paper before, thank you!

Divide your big wall into two sections, including a small collage of art on the empty area and a larger painting over the couch.

Here's some suggestion for your wall you might like......to know more about my Art work and collections please visit my shop -

http://www.pooviartgallery.com

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It's difficult to tell from your pictures the layout of the entire space but it certainly doesn't look like you have enough "surfaces". 1 floor lamp lights the room? Hanging stuff willy nilly on a wall without "anchors" will just look unfinished

jck910 can you elaborate on what you mean by "Hanging stuff willy nilly on a wall without "anchors" will just look unfinished" it sounds like you are criticizing without giving helpful advice I'm sure you just forgot to explain what anchors you're talking about.
And yes not seen in the pictures are the rest of the surfaces, we have hosted countless parties and have not even come close to running out of surfaces for food, drinks, board games, decorations, etc.

Thank you groveraxle, that is helpful, I actually have an extra end table and was debating putting it there!

I am hesitant to post more pictures because people always tear apart everyone's home decor and personal choices and comment rudely on things that are unrelated to the original question. I have personal pictures on the opposite wall and planters that I made personally and I do not want to hear how "pros" might think they are all positioned all wrong and whatever other nonsense people come up with. Last time I posted a picture from my dinning room people told me my travertine table was outdated and hideous, but we love it, it is my favourite piece, we got it for an insane bargain, and it seats 8.

I have receive many great suggestions from people so there is no need to post more pictures and open myself up for needly insults.

Your Dilemma: "I'm open to suggestions for artwork and placement, and how to treat the empty space between to two areas please! " It's hard to do that without a full on picture of the entire wall

My response just meant that without the context of the entire room it's very difficult to offer realistic suggestions. If you already have a wall with "personal pictures on the opposite wall and planters" then a gallery wall might be too much on the long wall. Hanging art work that is tall between the 2 rooms will work but hanging art work that is short will look like something is missing underneath it "an anchor"

rudgekatherine, a floor plan might help instead of photos. Even a hand-drawn one with some measurements would work.

We think art over the sofa and a console with art over it in the dining area would be very nice. Here are some of our designs below that might aid you:

Modern Project: Dining Room · More Info

Modern Project: Living Room · More Info

Riva Chase Renovation: Dining Room · More Info

Riva Chase Renovation: Living Room · More Info