To lie if she were me (85 kg) probably too hard, but to sit on it is really great. For correspondingly serious human which is, however, a good hardness, which one finds otherwise difficult, most mattresses are indeed rather soft.
She came small rolled and is fully deployed in a few hours. The smell is not very pleasant, as with such foam products unfortunately common, but it's still very little and warps quickly.
Unbeatable for small money, for something heavier people or to sit on with sofa beds!