Try some other interesting hostels in the land of Bulgaria:
Veliko Tarnovo - Phoenix Hostel
Probably your next stop is somewhere in Eastern Europe, why not?!?
Budapest Locomotive light Hostel
Boomerang Hostel
Bratislava Patio Hostel
Zagreb Fulir Hostel
Krakow Elephant on the moon Hostel
Olomouc Poets' corner hostel
If you still don't find your hostel, try the following:
Hostelz.com - hostels worldwide
Hostel in Europe - hostels worldwide