The link below shows corner connections that you could use to custom make your own curtain rods. I've seen other connectors online and you may be able to find them at stores such as BedBath&Beyond. For the dining area I wouldn't do more than adding panels on each side, hung on a short rod. In the bedroom, you could use a flexible traverse rod if you want draperies that can be closed, but then you'd need to add a cornice to hide the rod. I'd suggest calling a couple of mobile window treatment companies and getting their ideas on custom rods for the bedroom. All the ones I've dealt with will come out and do an estimate at no charge. Here is a link that might be useful: curtain rod connectors

Just popped in to say what a sweet table, and how nicely you solved your question! Looks like a lovely spot for a friend or family member to sit and enjoy a cup while you're working in the kitchen, as well a a good spot for a casual breakfast or snack. And very nice paint job : )

thank you! I thought about putting a little sitting chair next to the window in the corner of the room and just using that window as a sort of side table and to look out of

That Mantle Mount is brilliant. I recommend it, often. If you replace the coffee table with either C-tables as suggested, or a couple of nesting end tables - or a light-colored ottoman style coffee table - your space could appear less crowded, due to the mere fact that the sizeable dark sofa, combined with the equally dark coffee table, creates a dense look; so the current setup not only takes up physical space but visual space. Without the current coffee table, there would also be the added benefit of not having a coffee table with sharp edges/corners - which is a better choice with children afoot. As one example, this trunk style ottoman could also provide some closed storage, if that feature might come in handy for you.