Angel Simal Aguado
All You Can Eat for 10 Euros
We found this spot on one of those days when you're dying of hunger in an unfamiliar city. You see all the really expensive restaurants and suddenly an "all you can eat" buffet appears. All you can eat for roughly 10 euros or less. The buffet is Italian food: Pastas, salads, and of course pizza. Obviously the quality isn't the best, but given the restaurant prices in Helsinki, this is still better than McDonald's.
The staff doesn't really speak English very well. Maybe it would be a good opportunity for you to practice your Finnish.