They're very autonomous and don't communicate too much which doesn't demand much of your time. 

That's pretty fair.

As the property manager, it concerns me that the software does not allow me to select message timing and verify content of communications that are sent directly to MY tenants.  

I think communication seems to be the issue here especially with your comment on how the PM is unresponsive.

The seller and their agent hopefully did a good job communicating with that tenant to set expectations.

So I would suggest keeping your STR property geographically close and doing as much as possible to keep your profit% high as possible.As far as the actual house you use, I would just say - be honest, be fair and strive for the best area, most amenities, cleanest house, best communication, and any other extras you can get.

It took more time and back and forth communication than was needed, and compared poorly with other refinancings we have gone through.

Poor or No Communication PlatformsEffective co-living communication platforms are characterized by:1) usability2) accessibility3) commitment of involvementThis can be done through house email lists, whiteboard, group texts, etc.

Unfortunately, we get too many calls from clients that got the run around, poor communication and service and/or were the victims of a "bait and switch". 

Not trying to scare you, but a lot of lawsuits happen because the landlord doesn't follow fair housing laws, or simply neglects repairs etc.