The cat condo is solidly built.  Unfortunately, two of the three level condo are difficult to use.  The design limits access to the two lower levels and the space between each one is very limited.  Normally a cat likes to squeeze into smaller spaces but the posts get in the way so there's no freedom to jump up.    There should be a way of redesigning the posts not for less obstruction and providing more space between each level.  Three stars is possible too generous.  I like the sturdy construction and the top level is utilized by at least one of our three cats.