We use our bed spread but it was the lease of the bed issues. Our bed springs were such a nuisance we placed a heavy sleeping bag between the mattress and the top sheet.
I am sure that this mattress is used on all TT in the same price range. And, I will say that the bed and headboard combination did have good “presentation” to the potential buyer.
However, as mentioned, there is nothing in the bible that says you have to keep the old mattress and we will replace it or add one of those fancy memory foam top before our next trip.
We also have one of those folding couches that makes into a bed; provided you do not mind sleeping on two different levels and you are only 5 ft. 2 inches tall.