Final answer:
A friendly desk clerk in a budget hotel exemplifies implicit services within a service package, as their presence contributes to a positive customer experience in a manner that's typically unspoken and not explicitly advertised.
Step-by-step explanation:
The presence of a friendly desk clerk in a budget hotel is an example of implicit services. Implicit services refer to benefits that are not always explicitly stated when describing the service package but are implied through the nature of the service delivery. These services often revolve around the customer's peace of mind, comfort, and experience. They are contrasted by explicit services, which are concrete and specifically described parts of the service, such as guarantees, warranties, and service contracts.
In the case of the friendly desk clerk, the warmth and professionalism offered contribute to the overall customer experience in subtle, often unspoken ways, which is why it fits under implicit services.