This is a GRPC-based backend service that simulates a hotel web service. Users can query the service to book rooms or fetch available rooms. The service is designed to be scalable and performant, making use of the GRPC paradigm to enable efficient communication between clients and servers. The service provides a range of APIs that enable users to interact with the hotel's booking system, including APIs for checking room availability, reserving rooms, and canceling reservations. The service is built using modern software engineering best practices and is designed to be easily deployable in a range of environments.