Whilst I prefer the sideboard in front of the window (to avoid the long line of furniture) it would block all the heat and I’m not sure the window is high enough for a console?? I would be tempted to add more of the ochre for curtains and if it’s far enough from the radiator an oversized plant in a woven basket. I’d pull the rug an inch towards the tv and move the far table (in this pic) back and add a table lamp. Perhaps also paint the radiator/s in the wall colour? You could add a textured throw over the arm of the sofa under the window? Perhaps in time replace the footstool with a slim brass/bronze and glass coffee table and add a knitted or fur pouffe at the ”bare” end?

I agree with others about artwork and/or books. Slim bookshelves for small paperbacks or you could use picture ledges for either nice cookery books or other books to display front side forward or for actual pictures! Could also add interest with high level shelf and plants that cascade down. Also look at picture lights that can be mounted on walks above pics/shelves you can get battery powered ones if you don't want to hard wire into walls. Also a rug/runner will help cosy things up.

All sensible and helpful comments above. You don't say where you live, but this aesthetic makes me think of Mediterranea countries, or perhaps California/ Florida ? The tiled floor is lovely, and very practical, but the 'vibe' is more of a hotel lobby, so definitely a large rug, and bold wall hanging (suggested above), to create a sense of cosiness. And then - yes, live with it for at least 6 months, when further ideas will occur to you.

I think some simple white floating shelves with a few decorative items like plants, a vase or two and a couple of statement books would look good. Keep it very simple so as not to compete with the tv. I did think of a large artwork but think it will be too distracting next to your tv. You could also place a tall black simple floorlamp there as you have a socket.