What Centronatura is:
- a self-service style cafetaria.
- a big place (it's part of a 1200sqm health center, and the restaurant itself has 4 different rooms), very well located in the heart of Bologna's centro storico.
The food is diverse and tasty, simple and unpretentious, but yet yummy ideas of vegetables, cereals, seitan or tofu mixes. For lunch (I think the dinner menu is a bit more expensive), it's pretty cheap, 10€ for a 3 dishes combo that will probably fill you up.
It might be not the best decoration or atmosphere for a restaurant, but the staff is nice, and the place is quiet, good, and healthy! I just wish such a place would exist in Paris.