I like your cabinets, and would not feel the need to do anything to them unless you plan to sell soon and all the comps have new fancy kitchens. Can you find matching pantry cabinets? You may want to consider a built-in again. If your scale is correct, you have enough space to move the fridge down opposite the peninsula and have a fairly long built-in the same depth as the fridge. Then build an end end wall on the far side of the fridge to make the fridge look "built-in". With a regular interior door on the build-in, you'd have much better access than what you have now. You could use the peninsula as a landing space for fridge items. I like Sena's idea of moving the range down closer to the door, assuming the door will open towards the wall with the door to the basement.

I do think there's a disconnect between the bar stools and the kitchen. I think you're going to need to add an element with swirls which will mimic the swirls on the back of the chair. If I tried to pin point the disconnect, I might think it's the school house type lighting. The two don't seem to relate to each other. I'm always a fan of window treatments even if they're panels that sit to the side softening the windows.

It's difficult because the front window is super traditional with the arches and grids but all the other ones are very modern. Because of that, I would try to use the same window treatments to bring some cohesion between all of them.

@Ely M Beautiful inside too! Gorgeous floors. Love those windows & would be a shame to hide any of the features of them on inside. I’m guessing windows are centered on the wall - looks off in picture but guessing that’s angle. I’ve never seen angled rods as @threers suggests. I also think any inside mount blinds would be custom & $$$$ due to shape & I don’t think outside mount fits these windows. I would go with drapes with the rod just above highest point on center window & with panels that split in middle & pull half to each side. I see the vent at lower right so you may need to use shorter length that ends just below sill. Even though the other window just like this one is evidently in another room, if you want to cover it at night, use same kind of drapes so the view is the same from street & the back side of drapes should be white. BTW, love the hanging light too!