I live in a rented flat. It has to be sturdy but I can't be drilling holes in walls. She has a great big fat scratching post which she loves but she tends to ignore the hiding holes in it and just sleeps on the top. It's the exercise she's going to need if I'm honest. She's still too young to go out and I get her jumping for da bird at least twice a day but I do have to go to work. She has plenty of on the floor toys.