Just went there for dinner, nice surprise :even if they serve meat, they have many vegetarian options they you can easily "veganize" ( I.E. most of the many salads have cheese, but you can choose not to take it)
The menu is really wide, from yummy and healthy juices, to western fast food, or pasta or main courses with meat or fish, plenty of salads and indonesian classics; plus big array of desserts..which are not vegan, though.
The prices are under the range of that area ( salads around 4 USD, main 6/7 USD), but if you choose your indonesian plate NOT FROM THE MENU but ordering at the counter choosing the items in real waring style, you pay even less! I had 2 big big portions of mix indonesian ( fresh and well cooked) and i payed 4 USD including drinking water; last but not least, nice inside garden to eat avoiding the chaotic main road: will come back!
Cons: Not completely vegan or vegetarian