This is a real Penthouse, like Hugh Hefner's one! It's not a joke, it's an experience it self, to be in a property like this!
500m2 spacious rooftop app. with 3 bedrooms and 4 bathrooms. 250m2 terraces. Jacuzzi on the roof terrace, fire place and table tennis in the living room.
You most likely never seen something like that!
You are in the most exclusive residential area of Sofia city, just above the city center, that is 15 min walk away, or two metro stations ( metro entrance 150m away)