The good... good price, not difficult to assemble, solid, should be durable, won't tip over.

The only real complaint... the carpet fabric they used to cover the "wood" is only the thinnest of layers, not much if any padding to speak of... and u cannot tell this from the picture, nor is it mentioned in the description.
My cat has only used 1 shelf so far, and I put another familiar covering on that shelf to add some familiar scent and a little more padding... his previous cat tree had nice, thick, durable carpet layer... not this one.