OK..............The contingencies are that the bed cannot be moved from it's current location, not that that would matter being that there is only one other wall that could take it and the result would not yield a greater benefit especially taking into account the cost of moving the switches. The other is that you like the TV in that exact spot since it can be viewed from the bathroom and the bed. So.........basically the answer is, you need 'more stuff'. I try to never suggest ideas that cost money unless the OP has indicated they are going shopping for new items. Most of the time a room just needs decluttering or to be put on a diet by removing furniture that is not serving any purpose to solve decorating dilemmas. In this case I would suggest an amoire for the TV. Make sure you get one with a pull-out and swivel so the sides don't block viewing with the amoire angled in the corner. Don't worry about matching woods. In a larger room you can mix different wood tones and/or painted pieces. (Smaller rooms run the risk of looking junky with mismatched pieces.) One of the first and more inexpensive fixes is to add a dust ruffle to the bed and maybe fluffier bedding so that it does not look skimpy. Due to the Contemporary styling of the bed don't actually get a "ruffle" but something box pleated. A bench at the foot of the bed will be functional and help fill in the room. Some art over the bed. Curtains on the windows will help with the emptiness the room has now. How about a trunk placed under the window? Great for storage of out of season items too. Is that chaise actually used for sitting? It's diminutive size emphasizes the vastness of the room. Can it be put elsewhere? A large room needs large pieces of furniture. If it is in the budget I would get larger nightstands. You can use small dressers or tables next to a big bed. Larger lamps would have added impact. Over time can the current furniture in this room be moved to be used in a guest room and larger pieces be purchased? A larger dresser and chest of drawers would fill in the room and increase storage options. Avoid the tendency to try to fill in the room with a lot more little pieces of furniture to fill in any "holes". Spend the money in the budget on getting one or two beefy substantial pieces. Trying to fill in the room with decorative tea carts and fake plants will just make the room look cluttered without solving the original problem of the vastness the room has. Only buy furniture pieces that have a real function. Don't fall into the trap of buying a lot of shin bangers. Leave walls blank until you find art that you love. Buying art as mere 'fillers' won't make your heart sing when you look at them, they will only bring your spirits down. Adding crown molding at the wall level and in the pan would soften the harsh lines it has and make the ceiling not seem so vast. Note how some of the wall color is brought up to break up the 'sea of white'. Just bring up some blue. Don't do the cloud pattern. Right now the only real color in the room is Blue and there need to be another color or two to break things up. The color can be in the new bedding or bench cushion with a few pieces of wall art or things set on surfaces. Take your cue from the painting you love with the touches of Rust, Faded Yellow and Dusty Pink. Use Muted colors. Blues and Yellows are very intense and can be screaming when put together. Believe me, a 'dirtied' Yellow color will still look very intense in a room with a Blue background.

Put the clock over FP. New sofa and chair with round coffee table. Tall floor lamp next to blue chair and angle the chair and turn. I will show you an inspiration visual.

Hi Everybody, Thank you so much for your responses! I’ll mix the different ideas: I'll hang the mirror vertically in the corner and I hang the piece of art above the buffet. I like also the idea of the rug but I have kids and it’s really difficult to keep it clean. Do you have another alternative? Concerning the piece of art, 1 or 2 or 3 pieces? Should it cover the wide of the buffet ?

If it were me, I would paint the wood white and remove all of the items on top, so as to have a less cluttered space. I think a mirror, along with the prints on the wall nearby will feel too busy. Maybe add photos and a potted orchid on mantle, which will compliment the nearby prints and create a cute little corner. Play around with size, height and quantity and look at lots of pictures on Houzz and Pinterest to get ideas. Have fun! Just another idea would be to centre the prints over the tv, lower a bit and place side by side for a more modern and balanced look