I bought a couple of these;
https://www.4wdsupacentre.com.au/products/camping-gear/adventure-kings-stretcher.html
They are a big bed with plenty of room and they go up and pack away easily.
I have slept on this without a mattress and it is comfy enough, Much better with a mattress or a swag though.
I agree with Mick that a Camp bed makes a Massive difference to your comfort and it also keeps you off the ground away from the creepy crawlies and the heat/cold, Much better than crawling out of your swag in the morning [thumbsupbig]
I have tried a few different camp beds But they are all either too big and bulky or are an absolute PITA to put up/pack away, These ones from 4WD Supercheap are robust, comfy and easy to put up/pack away.