Hostel is not called alternative any more, but flashpacker. The location is the only handicap of the place, but it is not that bad thanks to extensive U-Bahn system. Within 20-30 minutes you can either be at the heart of Kreuzberg or Mitte area. It is small cosy ğlace with perfect facilities. Very clean bathrooms, perfect Internet (except the last night of my stay), computer stations to work, and very very friendly staff. They are really cool and helpful as they e-mailed me privately to ask if I need help for directions etc. The price is reasonable too (18 Euros per night) but it has also breakfast in it! Just for all those, it is worth to stay there regardless the distance.