I highly recommend this place. The reason being, I lived in Chiang Mai, Thailand for a year and when I came back to Hawaii I had difficulty finding a true authentic Thai restaurant. When I finally went to Chiang Mai Restaurant here in Hawaii, I had a great experience. I've been there about 6 times now. Everytime I go the food and service is great. They also have a really good papaya salad that's very spicy (Thai Spicy!). I found their menu helpful on their website. http://808chiangmai.com I think their desserts are pretty good too.
Listen, the best deal not just in Hawaii but out of the 5 states I have lived in. You will not find this nice of thai anywhere for the price. I can find comparable for 13 a plate... and a smaller portion. Go, you will not regret. When we are in town we eat it a couple times a week because we miss it so much. Almost all meals are 6 and a few run around 8.... You can't make it for that!!!
Food is awesome, the atmosphere is pleasant, the staff is extremely friendly and the beer is cheap! I highly recommend giving them a shot if you're looking for really good Thai food and a great place to relax.