Extremely easy to assemble. Instant love for my two cats. They were instantly alternately playing on it and sleeping in it. The cat tree is sturdy and can take a lot of jumping, climbing and scratching.
I know I always have trouble telling online if a tree or condo will “fit” my cats. Some look great but are only big enough for a kitten. My cats are both adults and weigh 12 and 9 pounds respectively. But the upper two parts (tunnel) and crows nest would easily accommodate a much larger cat.