Solid-wood or plywood frames outlast particleboard when dealing with local humidity levels around 80%+. Rubberwood is a common affordable hardwood option for storage bed frames. Untreated leather can grow mould without wiping and ventilation if it's left unchecked. New foam can off-gas a faint smell for a week or two after delivery.
A Queen bed frame measures 152x190cm which fits most HDB master bedrooms comfortably. Homeowners need to leave roughly 60cm clearance on the exit side for daily movement. Access through the lift door is the real limit at around 90cm wide by 209cm tall. Always leave a 2–5cm buffer when measuring corridors or internal doorways for delivery.