I had to visit this part of Madrid last week and I decided to have breakfast at Prasad. The place was really empty (unfortunately... I really hate when vegan/vegetarian places do not seem to attract customers, although I guess the bulk of the business must be at lunchtime).
I had a cappuccino with soy milk and a vegetarian chocolate&coconut cake. I asked for vegan cakes, but they had none. The cake was ok, though, and the cappuccino was really good. But the lack of vegan options for breakfast is unfortunate!