I don't have anything to complain about this service. If you are coming from/to downtown Helsinki…read moreand the airport this is the easiest and fastest way.
For only €6,50 (regular buses cost €5) you will be in your chosen destination in aprox. 30 min.
The bus is clean and has free WiFi to entertain your journey.
The times are very convenient, and it takes half of the time of a regular bus. (If you still want to take this route on a regular line bus aim for 615).