Would help with dimensions of the room and dimensions of your couch. Do you need a tv in the room?
Working with only the photos given, I would take the lounge out of the squashed corner and place it out into the main area. Not against the wall, leave about 500mm from wall. Place your floor rug at lounge. Put the coffee table In the middle of the rug. Remove the black thing, I assume an exercise machine. And put that in the corner where the lounge was. Add sheer curtains, if required on the windows and sliding door to soften all the shiny hard floor. Without any idea of what you require in the room it’s a bit difficult to suggest decoration ideas.

Forgot to mention, the room as a beautiful outlook.

It’s a lovely couch too but I think the rug is trying to steal attention. I would swap out the rug for something more neutral and save the colour for your artwork on walls

Is it a stand-alone formal 'living room' or a casual 'living room' attached to the kitchen?

Colours in a kitchen, or any other attached space, will affect suggestions.

It's hard to say much without having a better view of the whole room, the dimensions, and some idea of what you want?

A large rug in muted tones would compliment your lovely sofa, a coffee table, choose a favourite art piece then take your inspiration from that for cushions and throw.

Agree the floor rug would not be my choice, but it does look new, therefore the owner must like it, otherwise they would not have purchased it.

Ha, Dreamer you make me laugh, we all make mistakes when not taking in the overall look, including me. That’s why you guys are so helpful.