Simple open plan restaurant but proper chairs and tables and a menu in English! It's also correctly located on the Google map on Street 31. We got there at 8pm one night and it was still open.
The staff and owners are very friendly. They didn't have everything on the menu (no gluten for example). Some of the menu items don't have prices which we don't understand as the prices turned out to be reasonable and on a par with the other stuff with prices.
During 2 visits we had fresh spring rolls (VND 3000 each), fried spring rolls (also 3000), tofu, corn and cauliflower (written as broccoli on the menu, a common error in Vietnam it seems)in breadcrumbs (VND 30,000 per dish), seaweed salad (VND 50,000), mixed braised stuff (tofu and fake meat) (VND 35,000), rice (VND 10,000 for a big bowl), noodle soups (Pho, Bun Rieu, Hu Tieu etc, all VND 15,000). Iced tea for free but they have a range of juices and smoothies. We couldn't detect anything non-vegan but couldn't swear to it as we didn't try everything.
Great place to eat, everything was good and some of it was excellent and it was convenient for us as our hotel was at the Tay Ninh/bus station end of town.
Cons: Long way form Cao Dai Holy See