I recently bought a sofa bed, and shelled out extra for the one with the pocket sprung mattress.
Glad I did as the other mattress looked horrible, but the one we have is still thin, squashy and not that comfy.
My parents are staying a few days over Xmas and I'd like to make it as comfy as possible for them so I don't have to give up my own bed
Have read about memory foam mattress toppers, but aren't they all squashy and hot? I like a firm mattress.
Any advice/recommendations would be appreciated!