Choose Sam's message and edit is:
DELETE: I am very apologetic that I did not notice my allergies when I had the opportunity to view my apartment on my move-in day, however I will make sure that it doesn't happen again and as and add:I assure you, if I was given the opportunity to see my current apartment prior to moving in (like I requested to avoid this kind of issues), none of this would have happened whatsoever. I'm sure you'd understand the situation here. You do not want to apologize and make it as if it was your mistake, this wont put you in a good position when asking for your right. You have already done what's needed to avoid this kind of issue and the blame should be on the one who didnt allow you to see the current apartment before moving in.