Comes packaged very tightly so easy to relocate with. After 24  hours of opening, mattress with nice and firm. Overall it is a medium firm as described. However, please note the edges of the bed are not firm and these collapse quite easily if you perch at the end of the  bed. At these edges, can also feel some of the springs. Overall great quality for price. 
This is a review after 4 days of using.  Cant say if firmness will last....