I'm sure this is a question asked many times but here goes anyways. We've been given a lovely Mamas and Papas cot (including the mattress) from one of my OH work colleagues. When he said we could have it I said to OH that we will still need to get a new mattress. He happened to mention this to his colleague when picking it up and they got a bit funny about it saying "it's always been kept covered and cleaned". Am I being silly/snobby wanting a new mattress or do you think it's essential to buy a new one? The mattress does look pretty much new and is a wipe clean covered sprung one so would this be ok to use again? CONFUSED!!!!!