This forms part of the Iran Artists Forum the entrance is around the right hand side. The food is decent without being mind-blowing, but they promise the produce is brought fresh each day and the kitchen is completely meat-free, so there'll be no surprises in the salads, pizzas or khoresht (stew)
The atmosphere is good in general, They serve only vegetarian food, so do not go there if you are meat lover. Food quality is good and the prices are also reasonable.