Like this. You have to be able to ENTER the room,get a looooong console and a big tv
Sorry N.O. to the sectional, you will block fire or crowd foyer entrance. It's a huge sacrifice in flexibility to get a darn CORNER. You'll live. There are a ton of super comfy sofas and chairs
Your foyer and stair is half the width of the room! , So .........nope. traffic defines usable space: ) Don't wall off obvious paths.....
( you can give a barrel back swivel and ottoman as well )
I'd say no to an upholstered cocktail table. A hard surface is better /easier for snacks, games etc
Q