A queen frame needs a matching
queen size mattress — 152 by 190cm, in pocket spring, latex, memory foam, or hybrid depending on how you sleep. It's worth choosing the two together, since the frame's slat spacing and base affect how the mattress performs and lasts. For couples the value is in motion isolation as much as width — a good pocket spring or foam means one person turning doesn't wake the other. Match firmness to your sleeping position, not to a label..