Consider exploring a nice Roman shade there in a nice fabric that compliments your decor.

The downside to roman shades is they're either up or down, there is no middle ground. They are attractive and would really block the view at night. You can get them in light filtering or blackout. If your windows aren't a standard size they can be expensive when custom. While wood slat blinds aren't as popular as they used to be, the wider ones would fit in your window and you can turn the vanes up or down to varying degrees and open them all the way if you want. Look at blinds.com. There are a lot of options.

If you want an outside mount, a one-way, one-sided traverse rod would work.

If you don't like asymmetric curtains, use an inside mounted rod or two cafe rods (tension rods need no holes). Cafe rods give you the option of top or bottom curtains open for light and air.

Ditto everything @ptreckel said! You could actually combine the drapery idea with the top down / bottom up shade for the best of all options. Or, outside mount drape over medium size slat blinds. For outside mount drapes, the rod holder at the wall corner is like a shower curtain rod bracket. The same kind of bracket may work on some kinds of shades. Visiting a blinds / window covering store would help you see all the options.

Agree, panel, stacked left. Do a black rod and consider this one, available on etsy.com, with a black border. It is linen with a ticking effect. Hang the rod as high as you can.

https://www.etsy.com/listing/827475582/pleated-linen-drapery-panels-with

Just for another idea, depending on your style and the rest of the room, we have loved our decorative window films to add some color and fun as well as privacy and light filtration.

Get a roller shade with an interesting print to spice up the room. Inside mount installation for sure.