3.5 stars.
We ordered four 'foreign' things from the menu: Thai Iced Tea, Thai Spicy noodles, Spicy Chicken, and Basil Beef.
The Thai Iced Tea was mediocre: Instead of tasting anything at all like tea it was pretty much just sugar and had a slight strawberry taste to it.
The Thai Spicy noodles were super spicy and absolutely delicious. Definitely recommend if you visit. The spicy chicken was good too, although with the noodles, it was a little bit too spicy.
The Basil Beef was not so good. The beef was overcooked and overall the dish was just excessively greasy.
A bowl of rice from here was $2, I think. The lady who served our table mostly stayed at the back of the restaurant didn't even give us water until we asked her for it. We had to wait a while for our bill too because we couldn't find her at all for a while after we were finished eating!
There were three of us eating and the total came up to around $60. We were all full, but for Scarborough dining it's a little pricey especially if the food is just 'OK'.
Khao San Road's Thai Iced Tea definitely trumps this one, I think it's worth paying double for it.