I am very sorry to hear that you disappointed with your stay. However, I do not appreciate the accusations you are making since they are ***COMPLETELY UNFOUNDED*** and I will be contacting Airbnb to remove this review.
The building is managed by a professional company and we've hosted hundreds of guests without a single issue. The only people with access to your apartments are the cleaning lady, who, as already discussed, was long gone when these "incidents" took place according to you, and the managers of the building, who would need to be completely mad to risk their company's reputation, jobs and lives for 60 euros, some leva, 4 pairs of headphones and a charger. Please tell my why would someone steal your headphones and leave your laptops behind?! Why would someone enter the apartment, illegaly, multiple times to steal things that were there the first time?!
Since I do not appreciate unfounded accusations I will not be sharing my views on what actually happened. Trust me, if there was even a 1% chance the stuff was stolen by someone from the building staff I would have immediately reimbursed you and let go of everyone on the team. The amount is a fraction of the revenue from your reservation, I'd never take the chance to get a review like that one if there was a possibility we were actually at fault.
I sincerely hope you had a great time in Bulgaria and will not let this have a lasting negative impact on your view of our country.