Sofa placement should create a comfortable conversation area while preserving the main route, window operation, heating clearance, and a usable view of the room.
Quick answer
Place the largest sofa where it has physical support and does not force people to cut through the seating group.
Trace the walking path
Connect doors, stairs, and adjoining rooms without squeezing behind seats or stepping around tables. Test the route when every seat is occupied.
Balance support and openness
A wall can provide a stable backdrop, but a floating sofa may work when it defines zones and leaves enough clearance behind it.
Coordinate light and media
Check screen glare, reading light, curtains, and views from each seat. Decorative symmetry should not make everyday viewing or conversation awkward.
Boundary: Feng shui is a cultural and design perspective. It cannot guarantee health, wealth, relationships, safety, or other outcomes. Use qualified professional advice for building, electrical, plumbing, fire-safety, accessibility, horticultural, or medical questions.