Helsinki was a little more difficult to eat vegan food, the famous Fazer chocolate shop does not have any chocolates or hot chocolates that are vegan!
We ate good falafel from Fafa (http://www.fafas.fi/)!
The Scandic Grand Marina hotel that we stayed in was surprisingly a great place to eat. For dinner they made me falafel (so much falafel in one day) with grilled vegetables and salsa, and it was really good. For breakfast there was a section for gluten free, vegan diets. They had pumpkin seed butter, cashew butter, soya yoghurt, oat milk, different gluten free bread and cereals/muesli, warm porridge, seitan. I was very impressed by them!