I bought this mattress a few weeks before I was expecting relatives. I set it up 10 days prior as instructed and never sat on it, knowing it would be uncomfortable. I dreaded going to bed. What a surprise, and I mean a BIG surprise. This might be the most comfortable little bed I've slept in except my own bed. I didn't even think I could sleep in a single bed with 2 small dogs, but indeed I can. I didn't think the fitted twin bedsheet would stay in place ... it does. Next time relatives visit I may try to find a double air mattress bed by Serta so that they can stay in the guest room and I won't need to give up my bed. At least I know for sure IF they were to complain about the comfort of the bed, they would be the oddball. (Oh, I'm almost 64 and too heavy ... 10 nights on this ... no problem!)