Lovely place. Clean, quiet and welcoming. Excellent wifi including in the room. Very central location. Nice sunny rooftop terrace.
Cheap but very basic. About 10-15min walk to the old town. Also loud - bring earplugs!
This hostel is very austere and grim. The staff are unfriendly (except for one very nice staff member who is the exception!). There is no fun atmosphere or socialising with other guests. Most people only stay one night in milan so people come and go at all hours of the night.