Hydraulic bed frames offer the largest storage capacity of any bed type, typically providing 300 to 500 litres of concealed space. This deep, full-footprint compartment lifts smoothly via gas struts, making it ideal for bulky luggage or off-season bedding in compact flats. Singapore homeowners with no separate storeroom find this mechanism essential for maximising usable floor area within a 12 sqm bedroom. The gas struts ensure effortless lifting without straining the frame structure over time.