All of the suggestions are good if you only have one cat. Multiple cats not so much. Litterbox in the bedroom is ok if you don't mind the digging and scratching all night long. The box is a busy place at night. In the shower could get messy especially if you don't block the drain to keep litter out of it. I like the idea of making a hole by the steps into the adjoining storage compartment. Unfortunately not practical in my situation. All I do now is keep the box in the bedroom area during the day and move it up front at night. You will need to sweep and vacuum a lot as there will be litter and cat hair everywhere. Also I remove the clumps twice a day to avoid any odor problems.