Good that the heat/air system is over the door and doesn't interfere with your decor too much. It appears the ceiling fixture to the right of the FP might indicate that the dining space is there. Put a sofa in front of the FP and two small accent chairs with it, facing each other over a round glass coffee table. Can you wall mount the TV left of the FP? I think the room is too narrow to put the TV above the FP - you'll strain your neck. If you mount it opposite the FP, a sofa and two chairs could work but will need to be small scale - try apartment-sized seating. The sofa could face the window with the chairs opposite it. You could turn to see the fire or to watch TV. Swivel chairs come in handy in such tight space.

The floor and cabinets almost look like the same color. I would lighten the cabinet color - making sure it doesn't clash with the floor color. I would also modernize the open cabinet above the microwave by removing the moulding, or adding a door. I'd find an inexpensive countertop that pops against the wood (or painted) wood cabinets. Change out the cabinet glass to clear, and do a new backsplash that brings it all together. And, finally add a cool light fixture, and maybe a kitchen rug.

The first thing I would do is switch your light fixture to track lighting. That way you can focus the light onto that wall much like what is done in an art gallery. I also think that may stop the reflection you are getting. I think putting cabinets on the long wall will really close in the space. I would make your red wall your gallery wall. I'd frame everything in white so they "pop" off the wall. The problem with the other wall being the gallery wall is that it's just to narrow. You can't really stand back far enough to see the art.

Hey! Great space! The table is too small for the space, it would immediately help if you had head chairs on either end of the table. It would read larger. If you're interested in a new dining set, try a round dining table, seating at least 6 for size. You need something to define each space, a new furniture arrangement could help. I would try rotating the sectional so that its off of the window. Good Luck!