My kitten loved this right out of the box--- while I was assembling it!  The sisal scratching posts definitely attract her attention away from my furniture and curtains, which makes me happy!  She has not had any problems climbing around.  I do notice how some of the smaller spaces (round tunnel portion) seem to fit her size well, and she is only 6 months old... so this may not be the best for a larger cat.  My only negative is the color.  Listed as beige, I think the color is more a yellow variation.  I don't love the color, but it is not so awful that I will be sending it back.  A great choice and good value for the money as many smaller, similar items are more expensive for what you get.