It's cheap and fast. I'm used to buffets in America, so this is quite different, but mainly in the…read morearea of the salad bar. Lots of items I'm not used to seeing on salads, and missing items that I consider a given for a salad bar. :)
However, the hot food is usually pretty good. It seems typical that they have roasted chicken wings, meatballs, roasted corn, scalloped potatoes, lasagna, and sometimes onion rings. The onion rings are the pre-prepared ones (minced onions shaped like rings), but the chicken wings are actually pretty good. I'm most happy with the creamed potatoes.
The pizza is also pretty good. Most of them are a thin crust, although not crispy-thin. I will never, however, get used to the idea of tunafish on a pizza. I stick to the cheese pizza and pepperoni pizza. Last week they had a sort of BLT on a pizza which wasn't half bad, with some sort of white sauce.
Overall, it's a clean place to eat decent food. It's not gourmet, but I don't think they claim to be, either. The price is decent for Helsinki, especially for an all you can eat. The color scheme is a bit harsh (red, yellow, and white), but so what, right? :)