Our cats really like sleeping on this and it's lightweight enough to easily move around.  It will fit in even a small area.  The cushion inside the "cubby" is padded, as well (but it's a very thin pad). 
 Even our biggest cat (about 15 lbs.) can fit up top (but, the actual sleeping area inside the cushioned edges is only 9 in. x 9 1/2-in.).  The fabric on the cushion is very soft, but it gets snagged easily when the cat's claws get stuck in it.