Excellent place compared to other Thai places in town. Unfortunately, they don't get much business every time I'm there (hopefully they stay open!).
Most/all places "Americanize" the dishes, so if it comes out too sweet, not spicy enough, etc. they are always willing to alter it as long as you ask. That's true for any place I imagine. So if it was just OK the first time, try changing it and go again.
FYI when you get something at "1-spicey" that means they put in 1 pepper. Each new level means that many peppers (the hot Thai peppers). So obviously, 1 pepper/spice rating in a cup of soup will be much worse than a 2-level in a large entree.
If you like mango with sweet sticky rice dessert, I like it at this place the most.