Finnish Open takes place in Myyrmäki, Vantaa. You can find some useful information here: www.vantaa.fi/en/
“Vantaa is the heart of the Helsinki Metropolitan Area, with great connections by air, train and car. Quality hotels, the entertainment and shopping center of Jumbo and Flamingo, and a wide range of different cultural events guarantee that even the most demanding guest will enjoy their stay in Vantaa. In the Tourism section you will find information about arriving in Vantaa, accommodations, shopping, activities, events and conference facilities.” – Vantaa info
Here is some useful information how to getting around in Vantaa
Helsinki is the capital of Finland an it’s a modern city with over half a million residents. Helsinki alongside its neighbouring municipalities of Espoo, Vantaa and Kauniainen form a metropolitan area of more than a million inhabitants.
Finnish Broadcasting Company i.e. YLE