The soft color of console, and the console itself seem to complement patterned chairs. If you found a floor lamp, 1 chair/ottoman could be angled with the lamp, and not crowd the area..

An ikat type pattern isn't 'out of style'. Do the colors seem to complement your stained glass?

New lamp on console?

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with console's black hardware -- transitional simple drum.

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Don't block the window with a piece of furniture. Get a nice shade for the window and flank it on those two bump outs with nice, full stationary drapery panels. The goal is to lessen the recessed effect and make the wall and window look more unified. If you need privacy/light control look into top down/bottom up shades. Mount shade and panels at ceiling height. Use the console for TV in another spot.

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Although the bump outs are not here, and these are not mounted at ceiling height, this gives you a hint at what it could look like.

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Is there a tv in the room? Please post more photos, thanks. Is there a background, a reason for the window seating?

Just thought the window seat would be fun. but no real purpose!

What a lovely home you have. How deep is the indent, and how far down does the window come? I think a window seat could be really beautiful. Have you considered an electric fireplace? I love them :) and they are certainly the budget alternative to either gas or wood-burning. Not to mention you can enjoy flame ambiance without heating your house up!

You can still have the window seat with the window treatments I proposed. Here's a really serious variation on the window seat idea. It could be a great reading nook or snuggling spot for kids/grandkids.

Your chair is like this accenting set. Nothing bad if yours is a moss green. Mixed with abstract-type canvas art, with neutral grey/beige, etc. can look updated.

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How is this room used? The two arm chairs seem squeezed together, and I guess there's a loveseat or small couch opposite -- is this your main living room? A side parlor? Would you like to watch TV here? etc etc.

For sure, this space would look less crowded with furniture that was less overstuffed in design, so that there was a little breathing space around the pieces. But really useful advice requires more context.

Ok, we see added photos. This type? W 11.6" / D 28.7" / H 27.6"

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With your greens, linen-beiges, I can see this one:

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Back to window seating - now photos show there is enough seating.... ? I also like a window seat, but for me, can be cold by the glass.

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Just read this has nightlight [along with 2 bulbs in the shade].

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Your room doesn't look all that big and already busy with the printed sofa, club chairs and ottoman. Therefore, I suggest you keep everything else simple. On the window, I would install a white roman shade (the one shown is semi-transparent but it can also be opaque). If you do the built-in on the window wall as shown, it also provides hidden storage for your kids toys or anything else you'd want to store away from view. It provides space for decor (plants, books, lamp, etc). You mentioned your dream for a fireplace, some are quite inexpensive. Again I show white for the simplicity and give brightness to the room. I would complement your Ikat furniture with perhaps textured but plain off-white decorative pillows to tone down the print.

Could you put the couch between the stain glass windows and put the chairs across or on either side. if the chairs go across the console could go on the couch wall or in front of the window like a desk

I must say the furniture seems to be positioned odly but without a floor plan with at least approximate dimensions it's difficult to make any suggestions.