The interviewer wants to hear that you are passionate about some aspect of the housekeeping role. Your passion will help the interviewer understand that you will be employed for an extended period of time and keep you interested in the position. What is your favorite part? Do you enjoy knowing that you are being hospitable to travelers? Do you enjoy knowing that you are responsible for creating a positive environment for people who are passing through? Perhaps you enjoy that you get to work fairly independently throughout the day. Or, maybe you enjoy working in the industry for a specific reason. You may even share a specific task that you enjoy most about the job. Sharing an honest candid answer will allow your passion to automatically come through for the interviewer.