This work aims to provide a set of conceptual analyses, models, methodologies, techniques, and systems that can equip a modern manager to choose the most appropriate solutions to the operational problems of the hotel business. It presents older and more contemporary theoretical analyses on management issues that can serve the hotel manager, outlines the functioning of the hotel business and the role of hotel departments, discusses the specialized computer software used or that can be used in hotel operations, and provides numerous examples to make the author's positions more easily understood. However, the main goal remains the description and evaluation of the key factors on which the effectiveness of each department and the hotel unit as a whole depends.