I recently started looking at LoopNet which seems like a great resource for Low to medium MFH and apartment buildings, have you used it before?

I don't know your situation, but I know that if I can self manage, self repair, and keep costs low, anyone can.

Repairs and maintenance costs have been pretty low.

Besides the low rent she pays she is very demanding, pays late and is not taking good care of the property.

After that then and only then make some goals based upon that because then you will have goals that make sense in light of what you are actually able and willing to do. 

So no, I wouldn't pay any of those low-interest notes off.

“The availability of affordable housing in Phoenix has plummeted very quickly and very dramatically,” said Maxine Becker, an attorney at the Wildfire Community Action Agency, a group that advocates for low-income residents of Arizona.Evictions are seen in virtually every community, from residents in their early 20s to retirees.

If you’re a millionaire liquidity is a small part of your investment strategy since the return is low.  

This either provides opportunities to invest in more real estate, rehab a property(s) or for personal use.You can also sell low performers to do the same.

When you do ceilings you only have to paper/ plastic the light fixtures and maybe some smoke alarms, you can hang plastic over windows, but the paint is usually dry before it hits them and wipes off easily.