Probably on the wall in the first picture, though it would be easier to tell with a drawn diagram of the layout. I am imagine you will come in the door, have a small table or bench there for mail under that window, or perpendicular to it to create an "entry zone". Keep the couch off the wall, have it across from the TV. Will you be mounting it, or do you have an entertainment unit you'll be putting it on?

thank you ! here's a layout of the room!

Either right of the single window, or opposite the black door for less glare. Totally depends on the furniture. Why not move the furniture in, get it situated and then you'll know what's still available for the TV.

thank you so much!