Part 1. Definition
You are given a review about a place. You need to provide a rating from "1 star" to "5 stars" for this place.
Part 2. 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!
Answer: 2 stars
Explanation: The writer has been annoyed in this place and has enjoyed the food. So, "2 stars" sounds reasonable for it.
Part 3. Exercise
I've stayed here over the last 5 years I think and it's gone from being nice and sane in a world of madness, to just a touch shabby.

I used to love it because compared to the rubbish hotels in Vegas, this was a bit of an escape. Sanity. Calm. No big casino. No clubs etc. I love all that...but not in the hotel. The walk to the strip was short and you know, the beds were fantastic.

Now though, it's just completely been eclipsed. The Wynn, Cosmopolitan and all the other newer hotels just dazzle and shine and the poor old Westin is, as someone else said, like putting lipstick on a pig.

The areas around it remain sketchy and undeveloped, the views are RUBBISH, the spa isn't great, the service is just ok, the TV (per the pics) is from the 80's I think... I come away thinking that I'm in the cheap seats and that's unfortunately not the truth either... at $180 + a stupid resort fee, it's a bit of a con.

And as a Starwood Platinum for many years....SPG you should know better. Please refresh and update or call it a pig.
Answer:
2 stars