Quiet inside a household is produced by architecture and other people.
A closed door helps. So do distance, insulation, rugs, headphones, a schedule, and an agreement not to interrupt. None creates quiet alone. The room remains connected to plumbing, footsteps, streets, appliances, and the needs of anyone outside it.
This makes quiet a resource.
Paid work may claim it because concentration has a wage attached. Sleep may claim it because the body cannot defer the need indefinitely. A child may need noise and movement in the same hour an adult needs a meeting. Creative work often asks for quiet without producing an obvious deadline that can defend it.
The room goes to whoever has the strongest claim, the most authority, or the habit of entering first.
Fairness cannot mean equal minutes in every circumstance. It can mean making the allocation visible. Who has access to a door? Who wears the headphones? Who leaves the building? Whose work is treated as interruptible? Who performs care while another person concentrates?
Architecture can improve the terms. A small workspace with a door may be more valuable than a large open room. Acoustic treatment can reduce transmission. Storage can keep a temporary office from taking over a shared surface. Schedules can move loud and quiet work apart.
Still, every solution contains labor. Someone remembers the schedule, lowers the voice, moves the activity, or waits.
Quiet is sometimes described as though it exists naturally and is then broken by inconsiderate people. In a working household, the reverse may be closer to the truth. Activity is ordinary. Quiet is assembled for a purpose.
The person using the room should know what made it possible.