the restaurant doesnt look really nice. it is more like a better version of food vendor on street. BUT the food I had was really tasty.
the chef (or owner?) cant really understand or speak in English though, there is a menu in English available.
Most of vegetarian restaurants in Thailand I went to didnt have good flavour, but the chef at Jay99 cooks really good. I went there twice and I was really satisfied (I hope they are not using MSG).
Updated from previous review on Thursday September 17, 2015
Cons: restaurant doesnt look nice