The name Archi's doesn't scream Thai cuisine or anything Asian for that matter, but once you get passed the unusual name, this place is definitely one of the better Thai restaurants in Las Vegas (chain or otherwise).
Tom yum soup is delicious here and you can really judge a Thai restaurant from the quality of this traditional Thai soup. The Lunch specials they have from 11 a.m. - 3 p.m. are a very good deal and equally as scrumptious!
Overall the interior of the restaurant is very pleasant and appealing for what it is and the menu prices are very reasonable. If you like Thai food you should stop by here sometime!