Tried it years ago when we starting managing MTRs and had zero inquiries or bookings from them.

I talked to Padsplit and they manage SFHs renting each room to different tenants - the total rent is more than renting it out to one household.

But I know it would make a good MTR, and managing it from next door would be easy peasy.  

In a previous life I projected managed 54 new builds and have done my own flips to stabilize my own neighborhood.

Is she paying a property manager?

@Brice Alef-Torrisi putting each property in its own LLC is usually overkill.Getting a bank account for each LLC is typically something you need to do to avoid "piercing of the LLC corporate veil" (actually depends on tax selection you made for LLC), but is also overkill.You haven't indicated how you are holding the deed for the latest property.If in your name or same LLC, you don't need a separate bank account.If in separate LLC, you can create a Master LLC, have each property LLC hire the Master LLC to manage their affairs, and just get a bank account for Master LLC.This is an opinion, not advice, so lookup CPA Frank Alcini in Troy for expert advice.

3) Can I rent to my son and also treat him as the property manager? 

I currently have a rental property and am looking at getting my real estate license and building a property management and property maintenance company to serve my investments and potentially others.  

@Craig DanielsI own a local top reviewed real estate brokerage and property management company in palm bay.

I would like a book or program recommendations in order to learn how to purchase and manage the extended stay hotel.