Dear Accommodation Officer,
I am writing to you, due to the fact I have been having troubles with my roommate who has been inviting friends and having parties most of the time, as far as I concern, there are rules every student must follow but it is not the case. This sort of situations are increasing their frequency and I can not study even maintain the concentration to finish my duties.
Furthermore, there are personal things that they took without my permission, for instance, my books, when I schedule in advance to study some material I could not because some of them took from my desk. For these reasons, I would like to consider to arrange a single room for me, as you know this stage of life can have rebounds to my career.
I hope you drill down into my situation to place me into another building which encourage me with better environment to concentrate properly. 
Dear Accommodation Officer,
I am writing to you, due to the fact I have been having troubles with my roommate who has been inviting friends and having parties most of the time, as far as I concern, there are  
rules
 every student  
must
 follow  
but
 it is not the case. This sort of situations  
are
 increasing their frequency and I can not study even maintain the concentration to finish my duties. 
Furthermore
, there are personal things that they took without my permission,  
for instance
, my books, when I schedule in advance to study  
some
 material I could not  
because
  some
 of them took from my desk. For these reasons, I would like to  
consider to arrange
 a single room for me, as you know this stage of life can have rebounds to my career.
I hope you drill down into my situation to place me into another building which encourage me with better environment to concentrate  
properly
.