Eurohostel (Helsinki (Helsingfors))

Nice place to host. Very goody hotel's team.
I was here summer 2006 & 2007
Simply & budget hostel.
Viva Suomi!!!)))

I went to Helsinki on a school tour and this is where we stayed. Cosy place

Our choice whenever we have to spend a night or two in Helsinki.
Affordable and cosy. Friendly staff. Fairly easy to find too.

Second all previous commentators. Just keep in mind you usually need to book in advance, since it's pretty popular place.