Located inside Aria Hotel, next to the Bacarat area.  Not sure why they call themselves a Thai restaurant when, like most Asian restaurants in the various casinos in Vegas, they serve dishes of all diffrent Asian cuisines.  Nevertheless, I was a fan of Lemongrass -- probably one of the few good things I have to say about Aria. \n\nThe food was yummy and authentic. I particularly liked the sesame chicken, extra spicy and the beef chow fun.  The tom yum soup was also really good. \n\nService was horrible -- really, really slow despite not being all that busy. Decor was nice.  There are definitely better Asian restaurants in Vegas.