This is dangerous advise to give to novice investors.

When it gets airborne then it's a danger.

I don't think seeking appreciation is purely speculation but seeking appreciation while having negative cash flow can be a dangerous game. 

C = lower middle class housing, more multi-family mixed in but decent places, some crime but low-level stuff nothing dangerous or violent.

@Aaron McCurdy For whatever it's worth, some the "tone" (dangerous to infer online) is along the lines of "I need something to do that will make some money but it doesn't have to replace the full $100K."  

The extra work to maintain control and hedge your risks is the key ... leverage with control has great returns, but leverage without control is very dangerous.

But, they said the heat was dangerous for the tenant and caretaker and have moved into a hotel until we "replace the A/C unit."

I'd say you're close and you need more research, estimating full bath and half bath at the same price gives my thoughts a red flag that you're too green, although it is mostly accurate (but still low imo) as it evens out, but applied individually, it's dangerous at best.

Not for newbies.Especially dangerous time for newbies investing OOS TK.I am stopping buying in my area for regular SFR and apartments.

The key to avoiding the situation you are talking about, and rightfully so because it can be a dangerous situation is to buy properties that can sustain their income, in markets that support that sustainability.