Very good South Indian vegetarian food. If that's your thing, this place has what you're looking for. I know whereof I speak. Also, the layout is a pleasant step above the typical hole-in-the-wall.
I did have two minor disappointments.
1. The waiter was engaged in needless upsell. He really wanted us to get an alcoholic drink. When I pointed out we were driving (which we were; we'd stopped in off the highway), he just smiled and said, "One drink is no problem!" That's a really dumb thing to say.
That aside, our waiter was friendly and enthusiastic and a really good sport. (Unlike the one waitress, who seemed utterly bored with her job. Someone came to pick up a takeout order, and tried to ask her a question, but she just pointedly stared away into space until he left. She brought me a plate, slid it under my nose with the most atonal exhortation to enjoy -- as if suggesting I had better.)
2. The kids' menu seems to have virtually no nutrition. We ordered the "cone dosa", which is a dosa entertainingly shaped like a party hat, but it came with no vegetable, not even chutney -- just *tomato ketchup*. Given that our kid loves real Indian food, this was pretty disappointing. Maybe this is just what plays well in Stamford (to be fair, an awful lot of kid menus substitute entertainment for nutrition). They could just have done much better, at least giving the parents a choice about what ended up on the plate.
So, a bit of an odd place. I wouldn't go here for a fine dining experience. But I would think of it as an upmarket hole-in-the-wall where I go for the food. It's very good, and for those who crave "authenticity", it has it in just about all respects.
Cons: slightly odd staff, kids' menu could use more nutrition