I' ve been at Hostel Internet Sofia on 13 of Oct with my university classmates. We were 14 persons. We filled up the 2 hostels and the owner kept the entire rate without discounts and none sort of deal in, she was very unpolite. We paid 11€, but it's not written anywhere when the low season starts. I think October is not included in high season.
In the hostel situated at 50a Alabin str. 2th floor (in centre) the rooms are pretty good with quite new fornitures. The worst thing is the bathroom: 1 for the whole hostel so it' s very easy bump into a dirty wc. And even shared room is very small with a very noisy PC.
I was in the second Hostel just behind the corner, not far from the first one. The living room is bigger than the first one and the fornitures are better. I was in the quadruple room but there were only 3 beds so one of us slept on the sofa but he paid the same price, very unfair!! And he also had a skin rush because of unknown insect into the sofa!!So be careful!!
The rooms are clean and the bathrooms are two and clean.
Another bad thing was the breakfast: only coffee, tea and bread with jam or smell cheese (maybe past its sell-by date) and ham. None milk. none french croissant, none english, none cereals or muesli and the service is very slow and unpolite.
Ah! I was forgetting to say that the hostel is called internet hostel but there was only one PC and it engaged all day long!!So if you wanna download e-mail wake up early!
In conlusion rooms are good but the service is horrible!!!