Building a cozy nook in my cramped studio apartment

I recently moved into a tiny studio apartment, and I’m really missing having a dedicated cozy spot to unwind. The place is only about 300 square feet, and every inch counts, so I can’t just throw in a big armchair or bulky furniture. I tried corner shelves and a small bean bag, but it still feels cluttered and not quite inviting. I’m aiming for a nook that feels warm and personal, maybe with soft lighting and some plants, but I’m struggling to balance comfort with space constraints. I’ve seen some creative ideas online like wall-mounted desks that double as shelves or foldable seating, but I’m worried about making the space feel even smaller. Does anyone have experience creating a snug little retreat in a tiny room? What are some space-saving furniture or decor tricks that actually make a difference without overwhelming the room? Also, how do you keep it feeling cozy rather than cramped?