...located on 20km from the historical town of Kotel, 45km from the city of SLIVEN, and 85km ...located on 20km from the historical town of Kotel, 45km from the city of SLIVEN, and 85km ...historical town of KOTEL, 45km from the city of Sliven, and 85km from the seaside town of BOURGAS. ...historical town of KOTEL, 45km from the city of Sliven, and 85km from the seaside town of BOURGAS.