Why not, you can use cotton kitchen curtains as they are durable, lightweight and easy to wash. Pay attention to the wall color when changing your kitchen cafe nets.

I've had pleated blinds, metal horizontal blinds, vertical blinds, and wood blinds. Even though there are pretty pictures of blinds, blinds are not my favorite, especially vertical blinds. Blinds are impersonal, not cozy imho, and pleated blinds are very difficult to clean. They attract dust and pet hair, I think, by static, and vacuuming does not get it all. Horizontal blinds, if cracked open for some light, leave a striped pattern on the window which I don't like, are a pain to dust, and are pretty much "all or nothing", and you can't leave blinds open at night if you value privacy. Vertical blinds remind me of corporate conference rooms. Sorry, I hope I'm not offending anyone. Curtains on the other hand, can be soft and flowy, let light in without compromising privacy. You can wash them or dry clean them. You don't have to open and close every single day to adjust for light/privacy conditions. Curtains are easy to change out, and you don't need a custom size if your windows are not standard sized. I haven't had the pleasure of roman shades yet, that's my next new thing to try. More than you probably wanted,mikneleh... LOL! Have fun with your decision.

Leather sofas can really dominate the room and can give an overall cold feeling. I would add some earthy elements, like a wood coffee table with glass or metal. Go to Restoration Hardware's website and look at their sofa room scenes. And I'm sorry I think the art is too harsh for the room. That's all your eye goes to in the room. too overpowering. I would look for something softer or maybe a cool mirror and I would add color to the room with pillows and some colorful lamps. I also think woven blinds would look great. They add warmth and give a finished look. The color of your window treatments should contrast your wall color a bit, not match it or else it starts to look generic and blah.. You have warm walls, warm floors and the woven blinds, like Hunter Douglas brand would pull it all together for you.

Here are some photos that may help you. You have the ceiling height to have a nice heavy rod just above the top of you window that could run the ceiling width. That will give you the space to draw curtains back to expose the entire window. I highly suggest that you work with a designer. A good designer has access to literally thousands of fabric choices and will be able to help you in selecting the perfect fabric and design for your room.