... For sale Studio/ Open plan apartment, city of Sofia, Mladost-3, 33.36 sq.m, ...Construction type: High-rise building Year of construction: 1989 Year Heating: Central ...sale Studio/ Open plan apartment, city of Sofia, Mladost-3, 33.36 sq.m, € ... For sale Studio/ Open plan Apartment, city of Sofia, Mladost-3, 33.36 sq.m,