I struggle to believe this is "plush." However, it is not rock hard whatsoever--I'd put it between a true medium to medium-firm. The sides of the mattress are definitely more squishy when you sit down on it. I purchased the full size. Obviously, there is a foam smell. A week into owning it and it's still there, just a bit more subtle (or I'm getting used to it!). I remember having to wait a couple months the last time i had a foam mattress for the smell to fully dissipate, so I'm not too worried and, plus, it is not overbearing.