Delighted with this cat tree! It is perfect for a fairly small space and was super easy to put together. Switched the pieces around to put the bed at the top. No problems getting the top bit wedged into the ceiling by standing on a chair. Feels sturdy.  Took in a young stray cat/oldish kitten who after 3 months was still literally climbing the walls and after 1 day sussing it out, now she sleeps very happily in the hummock/bed at the top, comes down to purr loudly and before long is back up there. Could not be happier.