I am so overwhelmed with the extreme cuteness but also the love that has been developed between Harry and your family. This would be viral if it were Youtubed.
It will be difficult to say goodbye to Harry. Won't you take him with? Put him in a crate and take him. Hmmm?
I hope the landlord can see how special he is. I think your landlord will miss you as well. You guys will be the most unique family he's ever met.