I've talked to several property managers with good reputations. 

I had a reputable roofing company come out to inspect the roof and make an honest recommendation.

How do deal with that security issue aside from hiring a reputable cleaning company?

This is a practice by some less than reputable companies.

I think this says it the best:"The general rule is that the building owner is responsible for the damages to the property as consequence of a break in. ...

Looking forward to networking more and increasing my value and reputation amongst you all.

I’m a buy and hold investor so keeping it makes sense but passing up on selling with no tax consequence also makes sense.

Consequences could be disastrous Keep everything professional, this sets the tone for the tenantBookkeeping and Taxes If you do it wrong, you’ll end up in jail You can use spreadsheets by dividing it into sections that correspond with the IRS’s categories for income and expense You can also use QuickBooks.

Anyone know of reputable companies looking for real estate interns?

Look at the reputation of the contractor, get references from previous clients, and review the materials they are proposing to use.