I am living here since 3 years now. Becoming vegan in May this year I was surprised to hear that this place has vegan food. I was there twice. There is one menue just for vegan food. I tried two different salads, one pizza, and one seitan dish. It tasted really very good. And it inspired me for my own cooking.
I will definately go there again. Also the non-vegetarian pizzas are very good (said my friends), so you can go with friends eating everything.
I can highly recommend the La Piazza Toscana, especially in Summer when you can sit outside.