The short answer for a green-cheeked conure
A green-cheeked conure's cage belongs where the household actually lives: the living room or family room, backed against a wall, raised so the bird sits near eye level with the people on the sofa, and separated from the kitchen. Among the smaller parrots the green-cheeked is one of the most people-oriented, and a cage exiled to a quiet spare room produces a bored, withdrawn bird that calls the moment it hears voices elsewhere. Put the cage where the flock is, and most placement problems solve themselves.
Eye level, wall side, and a conure's sense of security
Height carries meaning for a green-cheeked conure. A cage on the floor makes every approaching person and pet loom over a small bird, while a cage on a stand at seated eye level lets the conure meet its family face to face, which is how trust and step-up training build. One side against a wall matters too, because a conure resting between play sessions chooses the perch where nothing can approach from behind. Keep the whole setup out of the walkway to the kitchen or front door, though, since a cage in a thoroughfare gets bumped, grabbed at by visiting children, and startled by coats and bags swinging past.
Air first: what a conure must never breathe
A green-cheeked conure's room must be checked for airborne hazards before the cage is carried in, because a small parrot's respiratory system takes in fumes efficiently and the bird spends nearly all its life in that one room's air. Overheated nonstick cookware and self-cleaning oven cycles in a connected kitchen are the gravest risk, so trace how cooking smells travel on a normal evening; if they reach the proposed corner strongly, the corner fails. Banish scented candles, essential oil diffusers, plug-in air fresheners, hairspray and spray cleaners from the bird's room, and make the home rule simple: nothing is sprayed, burned, or diffused anywhere near the conure.
Drafts, sun, and the hazards at beak height
With the air cleared, check the green-cheeked conure's corner for moving air and heat. A window that leaks in winter, an air-conditioning vent aimed at the bars, or the draft corridor between two doors will chill a small bird that fluffs up and loses condition quietly. Direct sun needs the same care: a patch of morning light is welcome, but a cage fully in a south-facing window by afternoon overheats with no escape route. Finally, look at beak height around the cage and the out-of-cage play area: phone chargers, lamp cords, curtain pulls, and houseplants are what an exploring conure chews first, and a puppy or cat with access to the cage stand is a hazard no perch height fixes.
Busy days, covered nights
A green-cheeked conure in the family room gets the social contact it craves, but the family room is also where lights, screens, and conversation run latest. Protect the bird's ten or so hours of sleep by placing the cage where a cover genuinely darkens it and late noise drops, or by keeping the day cage social and moving the conure to a small sleep cage in a quieter room each evening. Consistency helps either way: a conure that learns the bedtime routine stops arguing with the cover and starts settling the moment the lights dip.
However you arrange days and nights, record the cage position, the banned-products rule, and the sleep plan in one shared place, because KinsLe Family Sharing gives everyone in the household the same green-cheeked conure setup notes instead of four slightly different memories of them.