The hostel is exactly as I expected from the pictures and comments.
It was clean, the breakfast is good and people from reception are extremely nice and helpful.
The location is also pretty good, except for the fact the hostel is located at the top of some stairs (which I am not a fan of because I am really bad with physical activities :D). But stairs are part of Lisbon experience.
Everyday on a board you will be informed about event in the city or even what touristic attraction could be closed that day, which I found very useful.
I didn't know that I must pay if I need a towel (maybe it was written somewhere and I missed that info), but the price is almost nothing, so no complains.