...Sofia, about 6km Southern from the town of Kostenets and 35km away from Borovets ski-resort. ... For sale House, Sofia Region, near Kostenets, 70 sq.m, € 52 500 ...Rilla Mountains, 63km away from the capital Sofia, about 6km Southern from the town of Kostenets ... For sale House, Sofia Region, near Kostenets, 70 sq.m,