Stopped in here on a whim amongst so many Indian restaurant offerings. Tried the lunch buffet and was not disappointed. Granted, I'm a white girl, so my knowledge of good Indian food is probably not A level. But I enjoyed it.
Pros:
Very clean restaurant (didn't use bathroom or check out the kitchen, so no idea there)
Nice buffet selection - not a huge number of options, but what was there was flavorful and filling
Friendly service - granted it's kind of do-it-yourself, but they were very pleasant
Naan was good - and served nice and hot
Dollar value was good - buffet and drink was about $10
Cons:
Wish they were in Central Phoenix where I would go to them more often
Compared to some of the other ethnic food options in Tempe, Copper Kettle is a good bet.