At the Kalpna Restaurant I had a buffet lunch and while I thought the food not much varied, it still tasted good. Unfortunately, service was not very friendly and the food and how the buffet worked were not explained at all, even when I asked. In the end I found out that except the desert and one sauce everything was vegan.
Altogether it was ok to have a meal here, but considering all the choices in Edinburgh, I wouldn't visit again. Although I might, because reading all the good reviews here, I wonder if maybe I just picked an unlucky day!
Cons: Unfriendly service when I visited