I love the new "Timber Hide-a-way" I got Nibbles, and he likes it too. He grew out of his old little house, and it's higher and has more holes for him to go in and out of. However all of these are blocked off during the day so I can't see him! I think it will also give a better air flow inside it also, so he has SOME fresh air to air out that stinky bed when he uses it as a potty!
It is so cute when you lift off the house and he's all curled up like "It's not 8pm yet?" !