Having issues getting the picture to post.

Wait a few seconds until they turn from faded to bright, then hit submit.

Actually it is a pretty, serene room. If you want to add color switch up the accessories. Add a chair in a color you love and use that color for pillows & throws. Get a great pice of art for over the sofa. Look at minted.com; art.comor bigcanvas.com

Your room looks tastefully conservative, but maybe now you are regretting being so safe in your choices. I agree with Dee that changing out the rug would have the biggest impact. Some of the online rug vendors (RugsUSA is one) have tools that let you visualize how a rug will look in an uploaded photo of your room.

A large piece of artwork above the sofa, and maybe pieces for either side of the window would add interest. Choose art that you like and that will make a statement; don't just go looking for something that "goes" or you will still have a tastefully conservative without adding personality and interest. Not that there's anything wrong with "tastefully conservative", if that's what one wants.

I do live minimalist, I think I would add slowly. Like others have said, a rug with some color and pattern would add a lot, as well as artwork over the sofa. Nice space, it looks very calming.

I would get couple of chairs, coffee table, wall art above the sofa. Love your rug.

Add artwork above your sofa, pillows that contrast more with the sofa and a throw folded up in the basket to add texture. https://www.cb2.com/16-dorado-handwoven-pillow/f18903

https://www.cb2.com/16-zbase-pillow/f12433

https://www.target.com/p/60-x50-bohemian-tassels-stonewash-throw-blanket-natural-mina-victory/-/A-54084157

https://www.target.com/p/60-x50-bohemian-tassels-stonewash-throw-blanket-natural-mina-victory/-/A-54084157

Love your room! including your rug. Easy to add color with the art or other wall decor and accents. Or just keep it neutral and add textures. Depends on what you like.

If you can give a sense of what you like and a rough estimate of your budget, you’ll get some really helpful feedback here!

ETA--I took a quick look at your idea books. Images suggest you like neutral with or without a pop of color.

Wall art and a staged coffee table are the only things you need.

I like your uncluttered space. I like your rug, your drapes, floor plant, couch, pillows, wall shelves.....

Browns, cream and relaxing blues-

How much vibrancy do you want in this space? Bold or serene?

Wall art is personal and very difficult to suggest for another. You could DIY an abstract or enlarge 2 related photos and hang side by side over the couch. Frame them with blue.mat board.

A larger painting like this one is an easy DIY- acrylic, which is easy to paint over should you want to add different colors to your room. Give your art a frame by using wood trim ,to the sides of the canvas :https://www.homedepot.com/p/Alexandria-Moulding-WM-267-1-4-in-x-1-3-8-in-x-96-in-Pine-Lattice-Moulding-0W267-20096C/205917028?mtc=Shopping-B-F_D30-G-D30-30_20_MOULDINGS-Generic-NA-Feed-PLA-NA-NA-&cm_mmc=Shopping-B-F_D30-G-D30-30_20_MOULDINGS-Generic-NA-Feed-PLA-NA-NA--71700000032209454-58700003833955726-92700049583831712&gclid=EAIaIQobChMIisfy5PzH6AIVmK_sCh3UPwoOEAQYDCABEgInOfD_BwE&gclsrc=aw.ds

70" x 48" Blue & Cream Relaxing Acrylic on Canvas Wall Art · More Info

You could go bold color, but high contrast color may make your space feel smaller

Here is a series of same motif pics in same color palette... Display two rows of pics over your couch. They will invite conversation by guests as they reflect you

Neo Mint, Celadon Jade, Woods, & Metallics · More Info

I agree with what everyone has said so far. I think getting some art on the wall will be a big one. Add a coffee table and a chair with light pattern and color. Get a big chucky throw to place in the basket and maybe a couple large vases to help balance the basket on the other side.

Did the vertical blinds come with the apt?

Textured wood shades might not be worth the effort or price, but they would make the window appear bigger as they hang in the empty space between the rod and the window . Example

How to Layer Window Treatments · More Info

One last question.... How skilled are you with using power tools? If you are stuck at home and want a project.....

You could DIY a frame for your TV, or hire someone to build it for you.... Instructions and materials here: https://www.twelveonmain.com/how-to-make-your-own-tv-frame/

and also here: https://www.thecreativemom.com/how-to-frame-a-tv/

How to Make Your Own TV Frame · More Info

Also: https://www.thecreativemom.com/how-to-frame-a-tv/

How to Frame a TV · More Info

it's nice, but a little safe.

I would get a bigger pot for the tree. Or, put him in the basket.

you really need something (art or shelving) behind that sofa.

how about a hide rug on top of the current rug, and then bring in coffee tale or larger ottoman?

I like the pouf too. throw in one of those near the fireplace.

or try these X ottomans in front of fireplace.