We needed a futon that would sit in the guest room of our new home as we searched for a real sleeper for guests. We are considering buying a second one for the living room because this is by far the most comfortable futon either of us has slept on. It is a spring mattress, but not flimsy at all, sturdy and welcoming. It looks great up as a Sleeper Sofa too (the crimson is a bit darker and more true red than the image). There is no dent once its folded down. All our guests have been very happy with it (may be a bit short for anyone over 6' tall). The red rubs off a tiny bit on light fabric with first uses & if there are any huge spills on it there may be some cleaning issues, but that is the only reason it does not get 5 stars from us. As a sofa and a sleeper it is great value for this quality!