This is a wonderful Vietnamese Restaurant, just down the hill from Pohorelec towards Prague castle.
The food is delicious and the decor very exotic. The rooms have vaulted ceilings and there is a Buddhist temple at one end. Add to this Asian music and the atmosphere is great.
The food has a good vegetarian selection, exotic juices, and authentic Vietnamese dishes with a choice of rice or noodles.
The price is definitely on the low side of the $10-20 range.
There is also a wide selection of teas for those who prefer a non-alcohol choice.
I was told the service can be a bit slow, but when I was there it was fine.