Intelligent delivery robots are revolutionizing hotel and office services by offering autonomous, safe, and efficient multi-floor deliveries, thanks to their ability to integrate with and use elevators. This innovation addresses changing customer expectations for contactless and quick services, helps mitigate labor shortages, and enhances hygiene. These robots utilize advanced technologies like AI, SLAM, LiDAR, IoT, and cloud management to navigate complex environments, communicate with building systems, and deliver items like food, documents, and supplies. They improve operational efficiency, reduce costs, and enhance both guest and employee experiences by providing consistent, personalized, and secure services. While challenges like integration complexity and initial investment exist, the future points towards advanced multi-robot coordination and deeper integration into smart building ecosystems, making autonomous delivery a cornerstone of modern, connected facilities.