A bit more firm than your standard couch, but I kind of prefer that so it works for me.  It certainly isn't a couch you can sink into, but still quite comfortable.  Pretty sturdy fabric, I have a fully-clawed cat and while he doesn't scratch at it, he does cause occasional picks just moving around and it's not showing any signs of wear.

One note, folded down the bed is about halfway between a twin and a double, so a tight fit for two if you are planning on using for a guest bed or something.