Yep, I do.
I live in a three bedroom, seven room apartment. The library has a litter box in it but is otherwise kept completely bare of anything but books (it's directly over my downstairs neighbor's son's bedroom and the cats have woken him before), and the smallest bedroom is being used as a closed off storage room.
The remainder of the house belongs to the cats. It is devoid of breakables and knick-knacks, and has plenty of throwblankets draped to provide warm nests throughout. The livingroom has a desk, two chairs, a wardrobe, and a loveseat the cats share with me, and seven pieces of cat furniture they don't. The main bedroom has several clear, flat surfaces perfect for feline lounging and a king-size bed they graciously allow me to curl up in. Every surface in the kitchen is cat-friendly and one of the two tables is strictly for feline fine dining. The bathroom has a lounging area kept clear for impromptu cat naps.
The second bedroom is reserved exclusively for use as a feline "ten-forward/gym" - I am only allowed in there to clean and rotate the toys. There are shelves for strategic pouncing, a futon for stretching out, and a cube-gym that makes a neat three-dimensional wrestling mat, not to mention a handful of cat beds and hideaways scattered around. A three-foot crinkly tunnel and another dozen or so cool kitty toys round out the accommodations.