I bought this for my younger and very rambunctious cat.  He does use it a little bit, but even he has trouble getting up to the upper levels.  He really liked tearing apart the fake vine leaves.  He goes in the house, but will not get on the three upper roosts.  

This cat tree did not come with assembly instructions.  I figured it out okay, but made one mistake which I haven't bothered to fix yet.  It's not critical.

The non toxic materials does seem to be legit.  It did not smell upon opening the box.  It seems plush.  The sisal is sharp though, I cut myself while assembling.  Wear gloves.  I did find a small defect in the particle board, but it doesn't affect anything.

This cat tree, as the other one I bought, does not provide ample moving room to get from one level to another.  
Assembly was easy and straightforward enough.  Given the opportunity to buy all over again from the start, I would make sure I got cat trees that were easy for the cats to maneuver on and get up on.