When I make the reservation I don't know what I had to expect. But finally I was happy about my choice for two reasons; first and most important the position, over the U-Bahn stop "Mehringdamm" in the heart of Kreuzberg, a multicultural and really interesting district, just a few minutes from Brandeburg Tor and Alexanderplatz. Also near Est Side Gallery, the most famous piece of wall with some of the greatest murales I have ever seen.
Second, the staff are very kind; don't hesitate to ask for information and take the map that you could find over the desk, it's for free and really well done. Also the hostel had a great lounge where you could spend your time if you don't want to go bed....
The only things I did't like are clean (sheets never changed but it's ok for an hostel and towels to) and (FREE) wifi connection is really bad, but with a German mobile card, you can easily solve the problem.
Finally I recommend the hostel to boys and girls on vacation; for families you can find better.
DON'T FORGET TO TRY THE MUSTAFA'S KEBAB THAT YOU WILL FIND ON THE GATEWAY OF THE HOSTEL