ANY more than three or four people and it would be pretty unbearable.
But a lounge (or living room) of circa 4m by 3.2m can pretty much suffice for a single person and two or three guests.
Especially if the room is dual aspect, with a focal point, which could be a TV but could just as easily be an inglenook fireplace that’s around 170cm wide.
You can get two, 140cm-long sofas in a 4m x 3.2m space.
And should there be a fireplace at around 170cm wide, that provides more than enough space for 100cm-plus cupboards / shelves on either side.
Perfect for placing a TV on.
Images: copyright Mike Wilson