Siam has amazing Thai food. Period. The atmosphere is just so-so, and at lunch time, the service can be extremely slow because they are packed. That said, the lunch specials offer great prices and good sized portions of amazing food.
They will customize any dish for you by adding vegetables or taking things away. They can also legitimately make it super hot, which a lot of places won't do these days. I've tried multiple things on the menu, and everything is cooked to perfection, you can almost feel the love!
We usually get it to go, but regardless, you aren't going to be hungry, and you will be happy!