Tetra Retreat is located in Ai Helis, Kefalonia, a tranquil coastal area known for its natural beauty and peaceful atmosphere. The retreat is near Ai Helis Beach, just about 1 km away, and also close to Avithos Beach, approximately 2 km from the property. The Byzantine Ecclesiastical Museum and the Monastery of Agios Andreas Milapidias are within 5 km. Kefalonia International Airport is about 2.5 km from the retreat.