Lovely mattress, perfect blend of memory foam and coiled springs. 
I left the mattress for 12 hours after I unrolled it, the memory foam smelt a bit chemically at first but after a few hours it went (standard for memory foam)
My first night sleeping on it was a dream, was like being on a cloud. No noise springs when I moved and the memory foam moved with me. For the price I’d definitely be buying for the spare room too.