In our situation the tenant didn't notify us that she has company over, but other tenants did notify us about there being fighting and yelling, and a police/emergency services call related at the unit.

Besides paying the bills and collecting rent, he probably doesn't want to be "on call" for emergencies, repairs and maintenance.

Since you cant make her bathroom completely unusable for any length of time without her agreement unless it is an "emergency" I would only do repairs there giving her legal notice per your state saying bathroom unusable 2-4 pm on tuesday for example.

Let’s also assume adequate cash reserves on hand for personal and business emergency.)

But, I think I pre- handle what is an emergency with my tenants.

With the recent cold weather I know there has been significant "emergency" work for burst pipes, but I'm having trouble even getting someone to return my phone calls.I have checked out HomeAdvisor and google reviews, but wondered if any investors might have a good lead. 

CapitalOne360 will let you open up to 15 different savings accounts which my wife and I use for vacation, home expenses, emergency fund, etc. 

If it's an emergency such as a leak or a furnace going out, then either I'm driving there and fixing it, or calling someone to do it same day.The non-emergency requests get scheduled for a day later in the week. 

In an emergency situation respond immediately.What does your lease say about response time after notice of issue.If not an emergency we try to inspect within 24 hours and schedule the necessary repairs within 48.

It also reminds them they have 5 days to return check-in/check-out inspection list or they accept everything and will be charged for every damage.It gives both non-emergency and emergency contact information.