The wheel took a while to put together, instructions very hard to understand. Should say the base was hard, the wheel itself was ok to put together. Now that it’s together getting my 6 cats to use it is another thing! I have 6 cats ages one and up. Pretty much all they use it for is to sleep on. Lol. Maybe if they were introduced to it as kittens they would use it more. Oh well, it looks great! Great materials and well constructed! Would definitely last a long time.  I would of giving it a 5 but can’t get my cats to use it ( even tried catnip on the rug ). Would be great to introduce to a kitten or kittens. Older cat not to sure of, unless mine are just lazy! They do however LOVE their cat tree and I see Wayfair has a good selection of cat trees. May be buying their next tree from Wayfair, satisfied with service, price, and quality. Thanks Wayfair!  Mom of 6 fur babies!!