I personally find a property I am interested in and then drive by to check out the neighborhood (do people take care of their properties, are there lots of boarded up houses, etc.) . 

While I acknowledge that economic strength is just one facet of a good rental market, it is a major factor and I wanted to share what I've found (the details of my methodology and raw data can be found after the various rankings):Top 10 best economiesProvo-Orem, UTSalt Lake City, UTCharlotte-Concord-Gastonia, NC-SCChicago-Naperville-Elgin, IL-IN-WIDallas-Fort Worth-Arlington, TXKansas City, MO-KSLongview, TXLouisville/Jefferson County, KY-INSan Francisco-Oakland-Hayward, CABirmingham-Hoover, ALThere were two main factors to overall economic strength that I looked at – how diverse/broad the economy is and how many economic drivers (i.e. strength) the area has.

I had actually been looking for a quad in this neighborhood for a while so when it popped up I knew I was going to get it.

How's the neighborhood and local school system? 

Recent sales mean almost nothing when SFR’s for sale, in a neighborhood, are getting price cuts.

You have Repairs listed at 20% so if you are essentially saying vacancy and repairs are 10% each that is fine.If you're getting $1,300/mo on a place you're paying $50,000 for that is good......UNLESS it's in a D or F Neighborhood, in which case the cashflow can look great, but in reality be horrible because of constant tenant turnover and unreliable tenant activities. 

@Robert Clifford AirBnB ranks based on just a few criteria.

"Indoor/outdoor living" is the concept of putting in a huge sliding glass door (the size of a whole wall), for instance, that would, when open, combine a background and living room into one free flowing state.Market research indicates that renovations, and subsequently, "indoor/outdoor living", are very popular right now.For a personal perspective, would it be worth it to put these types of products in a Class B home, in a Class A or Class B neighborhood?

Of course they want the highest possible return for their money, so they look hard at marketed "C-class properties" in "working-class neighborhoods" in large cities like mine.You'll see utterly insane posts here on BP about it all the time.

Buy in decent neighborhoods