Review: I ate at the Hollerei 4 or 5 times so far. I've had the best vegan food in all of Vienna there but unfortunately also really mediocre food twice already. Especially the main dishes are a hit-and-miss while I always enjoyed the salads, soups and the only vegan dessert they usually have: the Tofu dumplings (I love them!). The last time I ordered the "crispy seitan rolls" which were totally soft and chewy (in "Viennese" I would say "lätschert") and there was so much thyme in the dish that every other taste was submerged. I will probably still go back there and try my luck again. The staff could be a bit more attentive. Prices are a bit high, though not excessive for Vienna.