If one is paying the rent, no harm, no foul.

If you play a marginal game and say to yourself, what harm would one more do, you could keep going and going until you have a menagerie in there.

And if it still comes as a surprise to someone, what's the harm?

Perhaps that was a mistake in hindsight, although I was prepared to counter anyway, so maybe no harm done.

Rather, out of a feeling of responsibility to my former tenants, who I happily provided positive references for.The reality is that it does a landlord no good, and could do harm, to respond to a reference request.I have also gotten calls from landlords lobbying for a statutory and regulatory change.  

The police don't remove people claiming tenancy rights unless they are an immediate physical harm to themselves or other.  

With the knowledge and financial means to purchase an investment property, they are not an incompetent person; based on how courts normally examine the situation in which you present.The fact that the PM keeps the late fee also doesn't harm the LL, because the LL is still getting their same amount of rent as is guaranteed to them in the agreement.

If a tenant just goes "no harm, no foul" and doesn't earmark the rent money in a bank account to show they were paying then in court it is likely the tenants lease will not stand up.

There's no harm in asking.  

Wildlife!