[Address
Block
Street 
Unit Number
Postal Code]                                             
                                                 Date:dd/mm/year
Hey Mum, 
                  How have you been ? Life in the hostel..<insert Description of quality of life in the hospital l, is it good/bad?> In addition, they also ..<talk about the poor quality of food served> . The worst part about the food is they do not serve vegetables. 
I'm ...<making about next plans(e.g.change to another hostel> .
I miss your cooking. . . 
Lots of love,
<your name>