You are given a review about a place. You need to provide a rating from "1 star" to "5 stars" for this place.
One example: Although I did enjoy the food here, I was completely unimpressed (and slightly annoyed) by the overpriced margaritas. I ordered a platinum which contained "fresh" juice. It tasted like it had sprite in it, so I thought surely she gave me the wrong one. It turns out that "fresh juice" is really margarita mix on tap from the same gun as the sprite. I asked for something fresh to replace the horrible margarita and received a rocks glass with just muddled lime and a salted rim. I'm not sure it contained any tequila. Horrible! It's not that hard to make a fresh margarita!
Solution is here: 2 stars
Explanation: The writer has been annoyed in this place and has enjoyed the food. So, "2 stars" sounds reasonable for it.

Now, solve this: We came here the day after Christmas with our 2 kids and our nephew to quickly eat breakfast. We were greeted in a very non friendly demeanor by this older woman who just couldn't get our order right. Once we got our order, she still got it wrong and I went back and said something to her. No apologies. She would not give me the small coffee I wanted instead of the large coffee and she short changed us a sausage burrito.

So, I bought another coffee, even though I should not have had to pay for it because I was in a rush. She just had a really sour attitude and I know she probably doesn't like working there, but it's not my fault. She accepted working there.

So, for that, I give her a 1 star.

However, the next day, we did come and the younger man was in her place and he was pretty much perfect. Got everything right. Great attitude, no issues. I give him a 5 star.
Solution:
3 stars