I went there a couple of time because the couple ( a Thai and a Japanese) who is in charge of this cute lovely charming restaurant/café is just so welcoming, so friendly, so nice. I actually miss them now, as I spoke a lot with them. I just turned vegan at the time, and it was so comforting to go someplace where you can actually eat everything. You know that feeling, right? It's easy to eat vegetarian in BKK but not always vegan. Anyways, I had a seitan burger there, the fries were amazing, and also the raw pasta (I discovered raw zucchini pasta and fel in Love!)
It's a slow food restaurant, so take your time, enjoy your drink (they import soymilk from the USA, the Silk Soymilk which is delicious).
One day, my BF was a bit sick so he had a nice warm soup made by the grandmother, was really good too...
It's really worth it, a bit more expensive than some other places but come one, the restaurant is so well decorated, in a nice vintage style, and the food is cooked with love (lots of love).
I can't wait to get back there! It remains one of the best vegan experience I had, especially in Thailand.
Cons: it's far from Europe....