My elderly stray I had adopted jumped on it right away. I was concerned if she would use it at all knowing she was homeless most of her life. She eventually got too old to jump to upper bed but she uses the little house attached all the time. Best thing about this is that the upper shelf is tall enough that my 125# dogs can not steal her food. It gives my kitty a place all her own without having to deal with the dogs and even though she has no interest in ever going outside again she loves to sit on it in front of the window watching whats going on outside. Easy to put together. Highly recommend it.