This cat tree is great. It is well built and was simple to put together. Our cat is medium sized and it turns out that the cat condo is almost too small for him. He still uses it, he just looks a little cramped. Within the first week I removed the ladder plank because it seemed like it was discouraging him from accessing the platforms above it. As it turns out, I was right, and soon after I took it off, he started climbing higher. Again, I think that might be a result of his size and wouldn't be an obstacle for other cats.