Have a look at this list of useful hints and sources of information for house hunters. Check out first the most important steps, then go ahead and apply for housing.
The UniCafe student lunch
You can have an affordable, student-priced lunch at the UniCafe cafeterias on all campuses. All Bachelor’s or Master’s students who have registered as attending are entitled to the student-priced lunch.
UniSport sport services
UniSport offers affordable sport services on all University of Helsinki campuses.