Two snuffley DS in on bedroom, snorting, farting, snoring, restless leg duvet flapper in the other. I got sick of crawling downstairs in the middle of the night to try to compress myself into a comfortable position on the sofa and hit on the genius idea of keeping a folding mattress in the bathroom. 
Only it sucks. 
It’s so thin my hip digs into the floor and I can manage about half an hour before having to roll over. Has anyone ever used a good one? This one is 3 60 x 60 cm squares that fold into a very flat cube, which are about the ideal dimensions for the space, but I will consider anything. Thanks