1) The ideal roommate shouldn't smoke or drink. 
2) He should help you to keep the room clean and neat. 
3) I would like him to be smart and always help me with homework when necessary. 
4) He must not be boring. He should have a good sence of humour.
5) I want him to have the same interests and the same tastes.
6) He mustn't be greedy, angry and rude.
7) I want him to become my best friend.
8) He should cook well and share the foodstuffs.
9) I think my ideal roommate should be polite and responsible.
10) He/she should be honest and kind.
11) He/she should be non-conflict.
12) He/she shouldn't be a chatter-box and should be able to keep secrets.
13) He/she should be glad to spend week-ends together. 
14) He/she should be able to go out in the evenings together.
15) He/she should not take your things without your agreement.