Well, I was going to suggest the ubiquitous fiddle leaf fern, but looks like you have a cat, and they are toxic to cats. You might Google plants that are non-toxic to cats and see if anything grabs your interest. I think some palms may be ok with cats (and they can grow fairly large), or you might look for a contemporary plant stand and just sit a smaller plant on it -- maybe a giant tropical bromeliad or something along those lines. That said, if your cat is prone to pester plants, it's probably not a good idea to include one in your décor. (Definitely don't put a fake plant in this pretty space.)

A piece of furniture- console, buffet, etc. and art above. It’s not a boring spot. I’m sure you know this but art doesn’t have to cost a fortune. Actually I recommend against it. My most expensive piece of art is in my attic. I can’t bring myself to get rid of it quite yet. My most enjoyed pieces are from second hand stores, originals, and very inexpensive. Favorite one is a large framed oil pastel that was $4.

(not a pro) What is on the other side of that blank wall? Is that a pool outside, and does the patio extend behind that blank wall? Do you have an outdoor kitchen / entertaining area? IMO this is very subjective to you, what you seek in your home, and if you plan to entertain outside. Lots of great art to show off? Yearn for a creative expression in your home? Make it a spot for a huge piece of art, and plan for some lighting to show it off. Love to entertain? Planning to host outdoor pool/patio parties? If so, it would be nice to have a beverage center with a pass through, sliding window above. Hand me my blender drink! Seeking peace and solitude? Are you a reader? Maybe a coffee and wine center flanked by bookshelves, or a window with a cozy window seat for reading; space for books below or as a small separation from the kitchen cabinets.

Maybe it's the perspective of the photograph, but the sofa seems really far from the chairs. Could you float the sofa away from the wall, much closer to the window? Bring the sofa/coffee table/chairs into a tighter group that relate to each other. Then console table behind the sofa, under the art.