Do you open your windows? Do you like to look out your windows? Do you need privacy? If you open your windows or look out I would use white grommet top panels. Otherwise perhaps white plantation shutters.

It looks like you like clean and mono; you could do roller blinds in soft black or gray tone or pull-ups. Silver curtains like Jodie's would soften things up, but I'm a little worried that two curtain rods and the barn door trim with the shelving is too much upper horizontal going on in one room.

I would keep it to simple inside mount Roman shades with gray or black band trim. There is not enough room for drapery and completion with fireplace wall and barn door. Very nicely done room. I would scoot the two chairs toward center about a foot so they join the grouping. Love the calm color palette.

Something like these but with dark trim. Chairs just need a few inches in. ;).

Thank you for the suggestions. That’s a good point to consider the shelving and the door tracks. I had not considered Roman blinds as an alternative.

We open our windows in the summer. Privacy is a concern but not major since we are not on a busy street.

At night you are going to need some privacy.

Lots of options.

Bare good quality roller blinds or paired with simple drapes should work. Same goes with venetian blinds.

These give you privacy and good light control. According to one comment on the page are like "MHZ shades (from Germany) and bought through http://www.rs-sylko.com/ -- they're based in the SF Bay Area but sell throughout the States."

Fabric?

I think it would compete with your fireplace personally. Another option is plantation shutters for a sleek clean look to give you privacy while allowing natural light in.

https://www.blinds.com/p/blindscom-classic-roman-shade/501686

be nice to bring in a little color. tried to get the green/gray shade.

maybe look at these also

https://www.blinds.com/p/blindscom-deluxe-woven-wood-shade/524828

So pretty! Drapery panels would add softness to the space and give it a slightly more formal feel. If you prefer a cleaner look and function consider flat roman shades.

Drapery panels to add some vertical lines to the space, and for the addition of fabric to all those other hard surfaces.

I do prefer the idea of drapery panels to soften the space. I see a lot of suggestions saying to keep to a light, soft colour and not to use a pattern. Should I se a white or a light grey? Or something else?

I'd pick a mild neutral tone of some kind so you don't feel like you are living in a black and white movie! LOL. Maybe a tone like a very soft apple green, not a green that is in the brown family.(I see your green kettle on the stove) or you might go towards a teal color ?, blue green or even that rich salmon that appears on your cabinet. Course on this computer, maybe that is a shade of red? I would bring your favorite color into the windows. Don't know if you like this but it softens the hard surfaces and edges of the room? https://www.moshells.com/2-piece-set-misaki-crepe-curtain-panel-green/ ----------or this.....https://www.anthropologie.com/shop/marrakech-curtain2?color=046&quantity=1&type=REGULAR   --- There are lots of interesting patterns or solids, but some color would be nice. Bohemian Prints would be nice with your rug, but not required.. Enjoy the planning. If you find a great buy on the curtain panels, floor length would be nice....you might consider a type of shade such as a roman shade? or similar, behind the curtains. Depends on your need for privacy and the type of fabric your curtains are, also.