By far, the roasted duck fried rice here is the BEST Thai dish I've ever eaten! Everything I had was delicious. The simple but elegant decoration creates a very homey ambience and the staff are always friendly and helpful. I'm in another city now and it's hard to find any Thai restaurant that tops the food quality at Siam. If I ever come back to SF, going to this place would be the first things I do due to its excellent food and service!