On the road from Fira to Kamari in Exo Gonia after the crossroad to Pirgos you turn the second street right. Then after about 100m again right, the way leads directly to the parking of ArtSpace.
By bus from Kamari or Fira/Messaria, get off at bus stop "Exo Gonia", which is in front of a complex of different stores.
From there it's only a short walk, simply follow the given discription before or the signs.