Easy to put together. Now that we put it all together.  My cats, but one, are way to big it! We we're all disapointed as this would be best for kittens or small cats. Out smallest cat weighs 9 lbs. which is almost small for her. Too. Our other two cats are 15 lbs and can not sit in the hammocks. They are too big to climb to the next hideaway. We took away two of the ladders to make som room. If I had it to do over, I would not by this model.