My initial thought was a negative reaction to all the tv wires. Over the fireplace is the obvious place for the tv , but I have no idea how that is done. You need a specialist there. The alternative would be to get a credenza to hold the tv beneath where is is presently hanging. Then, angle tv towards the room.

Bring the chairs near the window forward to form a cozy seating area, placing a cocktail table in the center.

This is a room with wonderful light!! What is missing is personality. You obviously favor modern art. Chose one or two colors from the existing art and bring in lots of fun pillows with texture. But vary them...not all the same. The present rug works and is a safe look........start looking for something with pattern at a bargain price.

If possible, move the tv to the wall opposite the french doors and lower on the wall.

Then make a conversational cluster in the middle of the room using the single chairs and a large square coffee table in the middle.

I agree with placing the T.V on the wall opposite the doors , add some drapes for glare control. The T.v needs a cabinet quite low and the T.V mounted on the wall at proper viewing height.The arrangement of chairs around a coffee table is agreat idea and 2 of those can face the T.V I like the chair by the piano, and BTW I love your art so I think you need to bring some of that color into the rug. A floor plan might help us to jiggle the rest for the best ideas.

You have lots of good pieces, and a nice room, it shouldn't take much to make the room look more finished. Definitely try to find a different spot for the tv. The hanging tv and all the individual chairs are giving off a waiting room vibe.

A larger rug with a slight pattern with a little blue in it would help tie the room together. Also a few colorful pillows. I'd like to see some texture. It could be the light but everything seems to be a bit flat. As Annie mentioned, a coffee table with a few nice accessories will also help.

eSale rugs has a nice selection of reasonably priced rugs. Free shipping and returns. If possible, first order the smallest size to see if you like it. Much easier to return. They always have sales so don't feel pressured by the "hurry, buy now" messages.

eSale rugs

Can you move one of the single chairs to another room? An arrangement with the sofa, two chairs facing the sofa, a coffee table with a few nice accessories, all on a larger rug would look nice. If you pull the chairs away from the edge of the room, towards the sofa, it will make the space look more cozy.

Please post a floor plan with details like measurements and doorways.

Personally I would not recommend placing the TV across from the french doors. You will have to keep the french doors covered by curtains all day in order to be able to see the TV and thus losing the best part of the room, all the light from those french doors! The TV isn't in a bad spot if you moved around your seating arrangement and either hide the cords or placed the TV on a nice stand.