I had read about this place on happycow and was pleased to find their food both at the San Francisco World Veg Fest, October 2012. Here's my Enjoy Vegetarian Restaurant review.
I can only write about the food and not the restaurant atmosphere since I only got to try their food at the Veg Festival. The owner and her family managed the booth and served meals at $10 for a combo platter: rice + choice of 3 dishes. Plus you could pay extra for fried spring roll, fried curry potato triangles, and fried sesame balls.
I got brown rice with steamed dumplings (yummy), a soft tofu squares with peas and corn dish (tasty), and sauteed long beans (good). Overall the food was tasty, and the family was friendly. I would definitely eat at any of their restaurants in SF (there are currently 3) when in the mood for Chinese food.