The venue of the workhop is
VTT (meeting room Einstein), Kivimiehentie 3, 02150 Espoo [map link].
The venue of the workshop
Restaurant Fat Lizard is Tietotie 1, 02150 Espoo [map link].
The cheapest and easy way to get from the Helsinki airport to Otaniemi is to take the train from the airport (both I and P trains are ok) and go to the Helsinki railway station (the end station). Then take a metro there towards West (Matinkylä) and get off the metro at Aalto University station (Otaniemi). The taxi from the airport to Otaniemi costs 50-60€.
More info here https://www.vttresearch.com/contact-info/how-to-get-espoo-otaniemi