Extra Guest in the House Part 2

Image from http://www.easyvectors.com/browse/human/travelling-vector-30

Continuing from my immediate previous post, after I sent the email to evict the extra guest in the house, I got an immediate reply.  He explained that the guest was his little brother, and that the brother was on short-term training in KL.  As a big brother, he allowed his brother to stay with him.  His tone was none too happy, he claimed that if his brother was staying for long term, he would have moved out to rent another place together.
Anyway, just the day before, the training ended and his brother had left for overseas work after the training.
So the problem was settled instantaneously. Even if I was too late informing him, it is good I establish some rules so that he is aware of it already.
Since the brother had left, I decided not to argue and be too harsh about the situation, and just thank my tenant for his kind understanding.  Phew! Case closed too.