I would get a light colored low key rug bigger than the one in the photo. Put the TV where the sofa is now, and the sofa opposite that with 2 end tables. A swivel chair for near the back wall, and maybe an accent guest chair on the side with the tv near the dining room. The arched entry to the dining room limits how "sleek and minimal'' you can be, but you certainly don't have to be old fashioned or cluttered. Everything sen below is from All Modern with other colors available

Start by making the t v wall more important. Using the wall paint color, paint a wider (wider the better) console with it. Inspiration photo. Add some (real) greenery, put in a wicker plant stand to work with the accent color in the rug. Scout around for LED battery powered wall sconces in brushed brass. Move the rug and the sectional a bit more to the right so you have more of a path by the window to get in and out of the room. Good place for tripod floor lamp. You can make this off-side work if you center the new console on the wall, but install the t v more to the right of the wall so it aligns with the center of the sectional. This is where you hang the artwork. Like this: This is a gallery set of art prints that you can download for $10.00, from etsy, and frame yourself, I'd stick with gold/soft brass framing to compliment brass sconces. https://www.etsy.com/listing/1630091776/neutral-coastal-vintage-landscapes-and?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=gallery+wall+art+set&ref=sc_gallery-1-1&pro=1&dd=1&plkey=2d1e9a12e4474b9cdbe1e05cbf4b8d85437711b1%3A1630091776 As for the window, purchase a lined panel, thinking white with a blue trim. This example of the install will work well. Notice how the rod is hung higher and wider than the window. In your room, you would stack back the panel to the right of the window. Again etsy for the panel. Except you want a brushed brass rodl

Keep the TV in the current configuration and location. Hang the TV on the flower table wall. Pull the sofa away from both walls by 6" or more if you can. Get a nice rug for under the whole sofa area. Curtains for the window. Figure out what you need for an entry area that can exist where the TV currently lives. Chair and console table? The little half table and some wall hooks?

Something like this, maybe? I hope the plan is to scale; with these large sofas, inches matter! I used the 90-inch sofa length but didn't know its depth or the dimensions of the chairs, so those are guesses (40 inches for sofa depth, 36x36 for chairs). I found the bookcase online so used its actual dimensions (lower right corner of plan). Guests enter the main seating area (assuming the upper right is the entry), with the sofa L facing them. (You can still sit across from guests by using the chairs and the sofa opposite them.) I chose a nesting coffee table that can be pulled out when needed to serve a crowd. The traffic lane from entry to dining room is now outside of the conversation area, leading past an art wall. The fireplace corner is for one-on-one conversation and for reading, with lamps (a table lamp on the sofa console and a floor lamp behind the other chair), the bookcase, and an ottoman to put your feet up. You could add small tables between the chairs and the windows to hold your refreshments. And here's a rendering: I used a subtle metallic silver (paper or paint) on the ceiling for the depth that the softly reflective surface gives. The ceiling then looks less flat and lid-like. The wall color is one of the lighter stone colors from the fireplace, used on the beam as well as the walls, and I did add crown molding to both walls and beam. This shows a darker floor because the dramatic sofas seemed to need its contrast, but I realize that I'm looking at one room only, not the rest of the house that I assume will get the same flooring. I did use large art, because to my eyes that scale holds its own better with the large, assertive sofas, but you could do a gallery wall somewhere if you prefer (just make sure the total arrangement is large enough). I used an antique arched window frame between the windows (echoing the curved backs of the white chairs) because I like the contrast a touch of age adds to a contemporary room. The rug is a soft abstract in neutrals and gray/blue. For the fireplace area, if the stone can be matched, running it to the ceiling would also help the room to feel taller. The ottoman between the two tufted chairs is shown in a neutral in the plan, but it might need to repeat the deep blue for color balance in the room. Or you could bring in the blue in a smaller rug (5x7?) under the chairs, set at the fireplace angle. Choose one that plays well with the larger rug. Ideas to consider, anyway; it will be a beautiful room!