The farm is located in Bárðardalur on north of iceland, mid way between Akureyri and lake Mývatn, around 45 minutes from each location. The farm is around 10 minutes from Goðafoss waterfall.
From the main road (Route 1) you turn south Route 842 towards Mýri and Sprengisandur and drive along the road for 8km. Eyjardalsá is the third farm on the right. If driving from the north you will be welcomed by this sign.
Below is a Google Maps location.
The farm sign to Eyjardalsá on route 842. Picture is from the south side but it’s the same on both sides.