Since you have a Pro tagged to your photo, I want to ask and only if you’re able and willing to answer, in all your readings - rich Dad, millionaire investor and so forth, what do you find to be an important characteristic or trait a real estate investor must have?

I'm in the process of understanding the characteristics of an ideal realtor for my situation and hopefully, I could find the right person or people and build my team. 

Once you select your tenant pool segment, all decisions about the property characteristics are defined.

However, the very experienced and grounded investors can figure out cap rates and multiple other carefully assessed characteristics to come out ahead.

Refine tactics in terms of neighborhood characteristics, property type and management style).because I have strong convictions in both the thesis and strategy I am better able to deal with hiccups and stressors and less likely to make fear based mistakes.

What other market characteristic suggest a particular area may be wrong for the strategy (in addition to avoiding expensive markets that no longer cash flow or markets with little industry and high unemployment)?

The location determines all long-term characteristics.

-Market characteristics exist.

War zone, Ghetto, Hood or whatever terms people use are terms that are used to describe neighborhoods that have certain characteristics.

Since you say "people" are complaining, that suggests more than one neighbor finds the mess left behind unsightly - which also suggests that your yard is not fenced and therefore your mess is just there for everyone else to live with.