Remove bedding first, then identify how the headboard, rails, slats and center supports connect. Keep hardware in a labeled bag if any part of the bed will be reused.
Work in a stable order
Take off loose drawers and slats before separating structural rails. Adjustable bases and upholstered platforms can be heavier than they look, so tell the removal team about motors, steel mechanisms and stairs.
Leave unsafe work alone
If a frame is jammed, damaged or requires lifting that puts you in an awkward posture, stop. A clear description and a few dimensions are more useful than an injury.