My preference would be drapes or valances on both sets of windows. I would at least put blinds on the other other bank of windows because the back side of your privacy fence is so prominent.

I think adding draperies to each end will look skimpy and not purposeful. I would either use a particular treatment like draperies, a tailored box valance or Roman shades for each window or skip it.

I very much like it as is. (And I like curtains.) I agree with Fun that just adding panels to the ends will look skimpy unless you add use 2x's the width like you were going to close them. I don't think there's enough room to do that though and I really do think it looks great as is.

Your windows are very close to the door and the corner. If you use curtains you're going to lose part of your window, which would be a shame. I would use wood blinds or roman shades.

I like it just like it is! Light, open and airy feel.

It looks unfinished to me, with blinds on some of the windows but not the others. Do you need those blinds on the back wall of windows for privacy? If not, I'd do sheers on all the windows that could be opened and closed as desired.

I think the room needs window treatments of some sort to soften and finish the room.

No window treatments but I would add wood framing on the naked 3 sides of the windows.

Move your sofa forward three inches and then do what stu2900 said. Though I might be tempted to hang panels at the ends just for effect.

You should have matching blinds on the 4 windows. If you keep the slats open, it won't obstruct the light or the view, although I can't see why you would want a view of a stockade fence.

Like this. Which by the way is one of my most favorite rooms EVER. Oddly enough my decor is called mid-century eclectic or rather "what the hell happened here".

Any who....