Eat in or take out, with a few tables outside and the ambience inside more upscale than most of the other veg buffets in Buenos Aires but still pretty casual. All vegetarian buffet with no labeling so I had to find who I think was the owner to tell me what was vegan, as a couple of other staff didn't know. About 40-50% of buffet was vegan. Paid about 50 pesos for a large takeout container which was plenty of food. They accept cards with a minimum of 50 pesos. About half of the food in buffet was Asian, with the other half Argentine. Seems to be pretty popular.
Cons: no labeling, lots of dairy