Saf Ansen is in Asmali Mescit and about 100 m away from Tünel. Going from the Tünel Metro Station, turn left and then turn right to Ensiz street. When you reach the crossroad turn left, Saf Ansen is 50 m. away.
Or you can walk from Pera Palace Hotel to Meşrutiyet Avenue., Saf Ansen is near Pera Thai.