You are given a review about a place. You need to provide a rating from "1 star" to "5 stars" for this place.

Let me give you an 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!
The answer to this example can be: 2 stars
Here is why: The writer has been annoyed in this place and has enjoyed the food. So, "2 stars" sounds reasonable for it.

OK. solve this:
(This is a review on the food and delivery only, as we have only ordered take-out from Curry Away)

This is a short review to say that when we want to eat Thai food, but don't want to make it or go pick it up, we order from Curry Away. We've lots of different things from the menu, and have always been very pleased with the food. Delivery time is short, and... its FREE! Free delivery is just such a plus. We also want to give a special thanks to the staff there for being attentive. Although we didn't mention that I am vegetarian, one staff member noticed that we were placing an order that was entirely vegetarian. They took it upon themselves to let us know that most of their recipes use fish stock (which I do eat when eating out...). We appreciated the gesture anyway!
Answer:
4 stars