by the way, different dorms have different policy.
take a 1 room which has 4 beds in it for example
some allow you to make a reservation for yourself ( 1 person ) but some required you to make a reservation for ALL 4 beds, even though you are single ( because they think you're coming in a group ) ! so please read the instructions carefully before you make credit card payment.
also remember you're sharing a room with strangers, so there will be conflict (if any). example you're sleeping but the others just got back from the city and turn on the room lights and make a discussion amongst themselves, and this wakes u up from your sleep. u just gotta be cool about it and u cant tell them to shut up .....so far the people whom shared the dorm room with me are very considerate and try to make as much less noise as possible but remember there are ALWAYS many idiots around !
if u dont like sharing with others, then make a reservation for a single room which is more expensive but not too much dont worry but surely less expensive then the hotels !
hope you get what im talking about and good luck
forza milan