Very well engineered cat tree, heavy weighted base makes it very stable with little chance of tipping over. All posts are covered in sisal so cat has plenty of scratching room and tree is tall enough to allow even big cats to stretch and scratch. 
 I managed to put it together in less than an hour using only the Allen wrench supplied. 
Decorative leaves are a cute touch but there are no instructions on how to affix them to the posts. (I wrapped the vines around the top of each post then tied an knot in them.)
Overall a very nice piece of cat furniture for the price. More importantly, the cat really enjoys it.