You're more likely to find LTR owners who want to convert to MTR because they are effectively the same rental experience and management for an owner, just with (potentially) more frequent turnovers.

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Houston in particular be vary wary of flood zones and any potential historical water damage from the frequent flooding / hurricanes of just a few years ago. 

The more frequent the turnover, the more time required and the corresponding higher cost.There are also market variables, dependent on the property location.So, you are basically correct with your theory:)

We see this frequently were you have two monuments inches or feet apart..

Need to know county, city property tax breakdown, dimensions of a few rooms, parcel ID #, etc.... but again, this is information that a listing agent will frequently leave up to the seller anyway.  

first class can and does get sold out frequently with premier status flyers getting free upgrades sometimes there are no other seats

This is frequently how marketing today is perceived. 

Each week when I drive by to check the property the yard has been mowed first thing Saturday morning which is more frequently than I would have maintained it.

Furniture, mattresses, pillows, linens, towels, bath mats, soap dispensers, hair dryers, iron, ironing board, vacuum, a FULLY stocked kitchen, TVs, cable, internet, rugs, outdoor furniture, hot tub (maybe?)