It is very easy to assemble and it's a pretty sturdy furniture. Cat and kitten went all over it even before I was done assembling it. It wobbles a bit when my 9 lb cat jumps to the higher levels (like most furnitures of similar height), but putting it against a wall eases that problem. The colour makes the room more cheery :)

The only real complain I have is the lack of padding under the fleece, making it a bit of a hard surface. But my cats aren't bothered by that. Would've given 4.5 stars if I can.