In what way is the sofa bed uncomfortable?, if it's a mattress that isn't too good,buy a cheap duvet and put that on top and the sheet on top of that. I have just bought one for that very purpose, from Dunelm mill. It was £9.99 and it's 4 tog rating. Aldi have Duvets in at the moment, or try Argos.
I hope you resolve the problem and have a good time.
Lighthearted - How long do you display Birthday Cards?
"Billy and Molly - an otter love story"

