Regarding Groningen Airport Eelde, this is the gateway for a visit to the Northern Netherlands. You can find more information about this airport here.
By train
Holland is easily accessible from many European cities on the bullet train. Many cities have direct ICE train to Amsterdam. For international routes, Amsterdam Central and Utrecht Centraal are the main train stations.. Once you are there, you can reach your final destination in Friesland with regional trains, tourbuses or rental car.
Rent a bike in Friesland
Within the province of Friesland you can rent a bike almost anywhere. Don’t want to bike yourselves? You can always go for the E-bike.