Instructions: You are given a review about a place. You need to provide a rating from "1 star" to "5 stars" for this place.
Input: I can't say anything negative about this chain. Their food is delicious, the restaurants are always spotless, and the burgers taste unbelievably fresh. I must say that since discovering their secret menu, I am a protein burger convert. I don't order them for diet purposes or to watch what I eat...I just love how they taste.

Something else I love, the staff friendliness from one restaurant to the next is consistently great and predictable.

A lot of burger joints and other chains could definitely learn a thing or two in terms of freshness, and the training of their staff.
Output:
5 stars