I plan to visit Helsinki for a couple of weeks and I'd like to use the Oodi library then. But I don't have an address in Finland and I'll be staying at a Hotel or Airbnb - can I still get a Helmet card and use all the facilities of the library?
Even if you don’t get a library card, you can visit Oodi and use the facilities (some facilities are bookable, you can get more information from the website). There are also customer computers on the first and second floor that you can use without booking.
I hope this answered your question!