Mattress is comfortable however it does take 2 full days to expand.  It's not super firm, I'd call it medium firm.  I wouldn't necessarily call it hybrid mattress, it feels like a traditional spring mattress.  Hybrid label is a bit misleading.  I have another hybrid mattress and you don't feel or hear the springs, here springs are prevalent with a fairly thin layer of foam on top, but as I said the mattress is still very comfortable.