I would stay away from drapery or any ornate swag. Consider a flat roman shade. The fabric will soften the space. The flat roman is a tailored, clean look that wont distract from the nice view or architecture of the room. keep the colors of the fabric quiet..again, so as not to be distracting. Mount on the frame above the doors and windows...below the upper windows

I would use curtains on a rod just about 6" above the trim, running the whole length of the room; so it looks like one rod . I would stack the curtains on each side of the windows and on each side of the sliding glass door. This will help to break up the long line of the window, depending on the style of your home, I would consider going with some sort of pattern, because there is so much pattern in the windows. I would also consider putting a rug under your table, to help warm up the room visually.

What are you looking for? Sun control and privacy? Or did u want to add color and texture? What are your needs?

Looking for color and texture more than privacy/sun control. Now that I think about it, we could also use something for thermal insulation at night. Visually, I'm not a huge fan of cell shades, but they do a great job of keeping the house warmer. Any suggestions for alternatives?

I like the idea of roman shades...do you think the roller shades that look like roman shades are a reasonable option?

Looking at the configuration of your windows, I see that you could do drapery panels that are able to stack and also able to close. I would mount them above all of the windows, say 4" above the window molding. You could do pairs of drapes that are able to close, and when open will soften the windows.

The other option is to do stationary panels with woven shades underneath for light and heat control. Wovens are available with a variety of linings to give thermal insulation or blackout if required. It appears you have a slider there so if you were doing shades on the other windows obviously you will not do one there.

I would personally go with the panels as they are so versatile. I never like to cut a window horizontally by mounting under transom windows.

Ooh oh ... you are so amazingly fortunate!! Look at that view!! In your little snowy woods, I can only wonder what furry creatures must be hiding ... or maybe warming themselves in a little burrow. And the majestic trees all clothed in their winter coat of white - can an artist's brush even come close to the color and texture? To warm up your lovely "sunroom", perhaps some Roman shades, as Joni Koenig suggested ... and a pretty patterned throw rug under your table and chairs in a nice warm red or persimmon shade. And mostly, sit back and enjoy the beauty you have in your own backyard!!

I agree w Julie mount over all your window. If u mount anything just above the windows and not all the way over, you will have a stacking issue. You will be looking into fabric and not your beautiful view. If you choose to do fabric just make sure they just do 2 times fullness

I have similar eating area surrounded by windows and wanted punch of color without distracting the view and had very limited budget. I made these myself--super easy. I've grown tired of the star "tacks" and will probably replace these with something more modern--but they have been a great "placeholder" that's stayed in place. There's a pattern for these I can point you to--involves 4 straight seams and a steam iron. You can pick a great fabric for impact. I added an orange drum shade again for punch.

Hi Chris--nice modest valance on a budget. When you decide to replace, consider mounting your hardware above your window so that that gap of window does not show between your molding and top of curve of valance. Would really make for a much more professional looking treatment. Hard to accomplish sometimes, but looks like you have the room here. Love the light fixture.

Architecturally striking is right! No swags, and no drapery unless needed for energy efficiency. Consider painting the muntins flat black for the effect of really classy steel frame windows. Get your warmth from rugs, furniture, plants.

JMittman thanks for the comment. LOL-- Ironically i did make the gap intentionally. Theres a curve cut on the bias of the woven fabric that's is the critical part of the pattern--it really lightens the look of the valance , lets light in and keeps the "bought from country curtains" look at bay.

Chris--understood. Here is a picture of the look I referenced. 2nd picture is rather dark--sorry.

Just wait, please no swags, no drapery, these windows are already too busy. Consider removing the muntins from the doors and transoms, see how that looks before adding more pattern and texture. There are so many vertical and horizontal lines going on it's a little much and distracting from the view which is beautiful. Outside, the deck railing adds even more vertical and horizontal lines to contend with. Only add drapery if needed for energy efficiency. Your lot is wonderful, many can only dream of living in such a beautiful place. I think your dog is waiting to go outside to play in the snow :) I'd also consider repainting. As much as I like a soft butter yellow, that colour is too close to your floor colour.

Looks like you're in a very seasonal climate, judging by the snow, so how about seasonal window treatments?

Something like some cheery red velvet curtains for the winter, and light blousy translucent cotton curtains for the summer? Both can be hung on simple "wrought-iron" curtain rods. Ikea has a great collection of rods, curtain panels of various colours and weights that you simply hem with iron-on tape, etc.

What an amazing view. Appears you do not need privacy. I would look at screen weave roller blinds with a cassette top that will conceal the roller when the blind is in the up position To maximize the height of the window I would mount them on the frame at the top of the mullion. With this product the darker the color the more clarity to see through the blind. They come from 0% to a 14% openness in the weave. I typically use either a 3% or 5% most often in the applications that I have done in the past. They can also come with multiple colors woven in them. Hunter Doulas has just come out with a new book with a large variety of fabrics.

Some photos of sunrooms with walls of windows and different solutions to covering them (or not) without interrupting the beautiful architectural lines:

Make sure you consider ventilation in your selection of any window treatment. That is, will you have access to open the window and will a breeze be able to pass through the material if it's covering the opening? Do the windows open from the top, the bottom, or the side?

Beautiful windows and breathtaking view! Love it! It may be that you are simply wanting visual warmth and color. I would not cover those windows. What about beginning by adding a rug under the table, maybe some additional seating vignettes with upholstered chairs in the room, but not against the windows on an area rug. Live plants, bowl of fruit on the table, a basket for books, throws for winter etc maybe?

We have the same windows in a big sunroom and opted for just plain white wide slat wood blinds. It helps with controlling the light through the day and I can open them all the way at times and they are not noticed as they blending with the trim of the windows.

I would actually recommend going with a Cellular Shade. It should fit nicely inside you frames for a nice clean look. I would also suggest leaving the transoms open . I would recommend this product be it has the option for Top Down Buttom Up so it gives you the most privacy and light control that you want. Its also a very clean look for a kitchen and the maintenance is very easy as well .

http://www.blindsdirectcanada.com/blinds-toronto/cellular-shades.html

Just a thought, I agree about having rugs out there for added warmth. I would recommend changing your table to either a round or a rectangle. Your square table does not work with all the squares in the windows. A Silver Sage color by BM would be great. If you only want fabric on the windows to soften the look. I would hang full length curtains in the corners. With the curtains and rugs (which don't have to be identical, they need to be in same color palette). Oh, that would be four panels in each corner for the curtains (2 on each wall in each corner). Hope this helps and makes sense.