For Chinese food in Vegas, Noodle Asia is fairly decent for noodle/soup-ish related items (China Grill at Mandalay Bay is better for other dishes I think). The won ton soup is pretty good-- nice flavors and whatnot, though I do think all the dishes here are a bit overpriced. But hey, it's Vegas, where everything is grossly overpriced.
Service is also a little bit slow for some things. Especially for big groups, it would be nice if all the food could come out at the same time, rather than having some people wait extra time.
Location wise, it's right in the middle of the Venetian, next to the casino floor, and we probably would not have come here if it was not for the fact that we were staying at the Venetian and it was convenient and it was soupy.
tl;dr: Yummy soups and noodles, but a bit pricey for what you're getting (though I don't know why you would be expecting something cheap...)