As you can tell by this late reply I am not in Budapest! :) But I might have to go there for a business trip in October. Would you mind sharing your reviews of vegan places you went to?
But of course! Here's my vegan Budapest guide, I'll be updating again soon too with some of the new places I went to this most recent trip:http://vegannomnoms.net/2013/09/vegan-budapest.html