This is a great-looking room, and there are so many directions you could go. So ....

I’m going vintage bold and contemporary. Your room can handle it! I so love the purple in this rug, and 70’s - 80’s mod vibe. :)

I’m picturing a very large abstract painting on the big wall.

https://incrediblerugsanddecor.com/products/momeni-new-wave-nw-06-black-area-rug

Big art:

Have to add funky mod pillows. :)

Big art you love plus a coffee table, lamp and area rug should do it. Make sure the rug sits under all of the sofa to really ground it.

Thank. You both! That makes a lot of sense! And I like that Style of rug!

You’re very welcome! :)

In this situation, I like the rug only halfway under the sofa — it shows more of the pattern, is more balanced with the room size/layout, and has a more contemporary look.

I totally understand what you mean.
You could think of a bright wall art. Or an art that will be light up ?

Here are some examples below