I have visited Pin Kaow twice now. Once when I was SUPER exhausted after a flight (and anything would taste good at that time) and once for a night out with a friend.
The restaurant has a nice, dimly lit atmosphere and you're greeted as soon as you walk in. Bathrooms are kind of awkwardly placed right as you enter...but I mean...who cares I guess. So far, I have tried the chicken pad thai, pad see ew, green curry, and crab rangoon.
The food is good. I've had a hard time finding Thai food in Vegas that isn't overly salted, and overly saucy. The only issue I had was they really seemed to struggle with the spice level. I asked for a high level of spice, but really it barely had any spice. This is a big no no for me because I like my thai food SPICY. Either way, I would likely return, because it's a nice atmosphere and the food was good overall.