The conference will take place in the Common Room of the Helsinki Collegium for Advanced Studies, located at Fabianinkatu 24, on the third floor.
You can find more information about the Collegium here
There is a train connection between Helsinki city center and Helsinki Airport and it takes about 30 minutes. Trains go from 5AM to midnight. There are airport buses and taxis right outside the terminals too. For more information, please visit https://www.finavia.fi/en/helsinki-airport/to-and-from/train-buses-and-taxis/
More information about transport to and in Helsinki and potential accomodation can be found here