Unless....the Mom is an addict/drunk with multiple infractions.

This is based on the high volume of conversations I'm seeing in STR groups from people freaking out that their summer calendars aren't yet booked, dropping their nightly rates and minimum stays, lamenting property tax increases (that they didn't factor in when purchasing), increased insurance costs and wanting to nickel and dime guests on every minor infraction.

And they will target your tenants for slight infractions if you cross them. 

Landlords are held accountable for renter infractions.4.

Instead show them how it is meant to be used in a safe manner, how wonderful it is, it is part of the premises and any unsafe use will be treated as a lease infraction and the tenant should govern them selves accordingly. 

Especially because, most are applying, with some type of LEGIT infraction at the time of applying.

You should also check with Code Enforcment as well to make sure there are any infractions against the property. 

As for your landlord.... a few years back when I was a newbie landlord I had a small infraction stated in my late fee sentences in my lease and when I went to evict my tenant, the magistrate found in favor of the tenant because of the misapplication of the late fee language.

I agree with them and the property manager has made good on paying the fine and clearing up the issues with the grass.What I can’t seem to understand is how it is even legal for a municipality to cite and fine 2 owners for the same code infraction.  

Had you been under my command, I would seriously consider Article 15 action and 3 days extra duty for the infraction.