Have been sleeping on a much thinner memory foam mattress on the floor for two weeks. It's pretty good for a temporary mattress, but I'm ready for my Big Girl Mattress now please.
I have a pillow-top thingy that I can put on the mattress also, but that defeats the purpose of the cooling gel layer. So I might try it without the pillow-top first.
(Got the pillow-top for the last place, because it was a furnished apartment & the mattress had experienced many people sleeping in it before me.)