Today I walked on Khongkha Road between Chaofa Road and Vannaprueg Road and I did not find this place. I did not see any word "vegetarian" and no yellow-red "jay-flags" either. Many establishments on this road were closed, but usually if there is a restaurant, you can see some kind of sign and if it is a jay-restaurants, there are some of these yellow-red advertisements outside the restaurant.
I suppose this place might be closed. Instead there are two usual jay-vegetarian restaurants on Phruksauthit Road.
Cons: Did not find this place