So you just need to make sure you always maintain good credit and available cash to make it easier for you to borrow.I just buy what I think is the best asset at the time.  

The 50% rule may apply for properties that are well maintained and the tenant pays the water bills.

I'd also want to put that they're required to maintain renters and liability insurance.Any advice?

Are they tired because management can cause stress, or are they tired because it's difficult to maintain 100% occupancy? 

Not needing a job is quite empowering and has allowed me the leverage to find several different roles that compensate me well, are quite enjoyable and allow the flexibility I need to also maintain my real estate.The flipside that nobody ever talks about is how great it is to invest without "needing" that investment income to survive!

If they are confronted with a reality that differs from theirs, they may react in a way to allow them to maintain their comfort zone and defend their reality, often by utilizing ridicule, insults, or derision to avoid further discussion and any facts emerging that threaten their position, beliefs, perception, comfort zone and feeling of authority.

The units worked fine, but in alot of cases the tenants abused them and also assumed in was a requirement for me as the landlord to maintain, which by the way wasn't.

Property values may never rise much, but for the price it will be really easy to maintain positive cash flow.

The budget was created and did Not accurately account for the end of life of the major expense, increased cost, and funding rate to maintain the property. 

How would you maintain those properties. 20 units is a significant part time job if they have been maintained.