My 5 year old cat loves his new house!  He enjoys the hidey-hole on the bottom, and sitting on the top platform.  The unit is of good quality, and most of it is pretty sturdy.  One thing to mention - my cat is only 10 pounds.  The top platform wobbles slightly when he jumps on it - maybe not too good for a huge cat.  Also, I found that when assembling the unit, four of the screws included were longer than the rest, and supposed to be used to affix the scratch poles to the other pieces included (but weren't labeled differently).  Other than that, I found the product to be extremely useful for the purpose I bought it for.  I would recommend it.