To really finish off your room, choose an area rug that coordinates with your sofa and chairs. With your exposed beams and brick fireplace, you need to warm up those cold tile floors with color and softness. I would also paint the entire living/dining area a warm neutral drawn from the rug you select. Due to your corner windows and entry door, I think your is in a good location. You already have many framed photos in this room, so I would suggest one large piece of art over the sofa.

Possible ideas. This is a long narrow room. First I would break it up into two areas, with area rugs...warm up all that white tile ( I have the same white tile). Just using the furniture that you already have, put the tv cabinet, caddy cornered where the stand up lamp is. Move all the furniture off the walls. Put the sofa free floating in the room, facing the tv...possible break up sofa if possible. Move the two chairs in front of the fireplace, offset. Possibly put small table between the two chairs. Just keep moving it around until you find something you like. Great thing about tile...easy to slide furniture around on!