The matteress is comfortable enough however I'm not convinced the life span will be all that great. I have been using this mattress for roughly 3 weeks now and only really sleep on one side, upon switching to the other side I had noticed the difference in firmness. It seems to wear very quickly (for all thats wondering, no I'm not a big unit. About 10 stone). I would definitely recommend this mattress for a spare bed that doesn't get all that much use.