Unioninkatu 38, A 205 (Topelia), University of Helsinki
Stair A is located to your right when first entering the courtyard. Room 205 is located in the second floor.
The Helsinki-Vantaa airport is situated some 20 km from the city centre and is easily accessible by train, bus or taxi. The entrance to the train station is in the corridor between the terminals. The train (both I and P lines) takes about 30 minutes to reach the center. A one-way ticket costs 5.00 € and may be purchased at the ticket machines both in the corridor near the entrance and at the platform. The Finnair bus can be caught directly outside of the airport; it takes about 30 minutes to reach the center. Bus tickets costs 6.30 € one way or 11.50 € round trip and may be purchased on line or from the driver. Taxi service from the airport to the centre costs about 40–45 €.
The tourist office of Helsinki is situated near to the conference venue at Pohjois-Esplanadi 19, or you may consult the official tourism website of the City of Helsinki.
Other hotels can be found for example at www.hotels.com/hotels-helsinki-finland/.