If this is your scenario, then it's fine to handle it like she did.If, however, you've got a house and the toilet doesn't work or the water coming in isn't potable or the electrical panel is shot, the house is not habitable.  

Getting that late call asking YOU to fix up the clog up toilet.

Those nagging phone calls from tenants at weird hours, driving to San Rafael to unclog a toilet yourself (or paying a vendor $99 to do it), showing tenants around when a property turns over.  

During warm seasons, AC window units are used for all units.Water Plumbing = There seems to be weak water pressure particularly in the attic floor when multiple drivers (toilet, shower, sink) are used at once.

@David Rutledge Deferred maintenance could be as simple as ripped window screen, cracked plate covered for electrical outlets, small burns on counter tops from hot pans, sealing a small leaking pipe with duct tape, not touching-up the paint, trimming trees that overhang roofs, etc. up to maybe a little bit of bowing in the floor because some water was there at some point. 

During warm seasons, AC window units are used for all units.Water Plumbing = There seems to be weak water pressure particularly in the attic floor when multiple drivers (toilet, shower, sink) are used at once.

With the properties being located out-of-state, they don't have to worry about the 3 am plugged toilet calls.  

I'm looking to purchase my first property soon and would love to pick your brain maybe on how your personal experience has panned out and come to be.

He had also taken all but one of the toilets and the sinks and most of the doors in the house. 

Just basic make readies for a $700/month rental.New hot water heaters installed, HVAC's are installed.... but my HVAC guy stole the toilet.