Osha Thai Cafe is one of those 'blink and you'll miss it' places. It's located in a strip mall on Frank Lloyd Wright and Shea and it's not highly visible from the road. The strip mall is a relatively quiet place that just doesn't see much action- except for Tango Grill and its abnormally loud karaoke singers!
But if you do go inside Osha, you'll notice that it is a tiny restaurant that has a family owned feel to it. There are a few tables and booths, and it's generally pretty empty in there. That's a shame, because the food is really good.
I haven't had Thai food that often though, so I can't be considered an expert on how authentic it is or anything, but I know good food when I taste it. I got a spicy vegetable soup and pan fried noodles for my meal. My friend got golden pockets and some spicy chicken dish for his. We both really loved the food, and our server was very sweet and helpful. She explained the menu items to us and was always quick with drink refills or anything else we needed.
Give this place a try! I'm sure they could use the business and you'll get a great meal too!