No point in processing undesirable tenants.

If it is in a C neighborhood there is a much higher chance of break ins and it attracts undesirables. 

The property is in an undesirable area that is going downhill quick.

If I find a property with excellent cash flow potential, will I have a good chance of securing a loan(albeit a higher interest rate) even though I have undesirable debt-to-income ratio? 

All the "ifs" make short sales generally undesirable.

Below are the primary causes of commercial MF default:Under-capitalized properties (no capital to maintain property and revenue declines)Untimely balloon payments (have to refinance when credit is tight and prices are low)Properties in undesirable locationsPoor managementFraudMitigants:Good locationsAdd valueCash flowPrudent debtReserves

Similarly to Providence you’re going to want to find an investor friendly realtor who can identify the more favorable areas to buy because simply crossing a street you can go from desirable to undesirable. 

For investors, real estate agents present many value-added propositions to their ongoing business.I feel that despite dealing in traditionally undesirable properties, investors are still VALUABLE clients.

I tell him your place though up to code is visibly undesirable, beat up interior wise, and thats why this place hasn't sold in 6 years (been on and off market without sale since 2013) you been trying to sell it.

The only thing that does is attract transients, vagabonds & other undesirables.