Whether a sofa set is luxurious, corner or fold-up, it's always up to you what requirements you have and what you choose in your living room.
Nowadays, it performs primarily an aesthetic impression, but you should not underestimate its functional performance. The seating set is mainly a design complement of your home, but at the same time most of us spend a considerable part of the day, so the sofa should also be made of pleasant material and have a shape that makes us comfortable when sitting.
You are the one who decides
Don't ever force what you don't want, even if you're new to the interior, and the designer can assist you. It will be you who will then use the sofa, so it is up to you how it will look and what qualities it should have.