What is difference between good and efficient service?

Good service is service that meets or exceed the customer's expectations.

Efficient service is provided in a timely, effective, and smooth fashion, without waste motion or material waste.

Good service is usually efficient, but efficient service may not be good service.
Good service is service that meets or exceed the customer's expectations.

Efficient service is provided in a timely, effective, and smooth fashion, without waste motion or material waste.

Good service is usually efficient, but efficient service may not be good service.