This is more of a commercial space comment, but what stood out to me is that overall, rated buildings demand more rent and are vacant far less often than unrated buildings.

STRs have great value in a city like Boston as we have year-round demand for short term housing due to a diverse economy.

The area sits along the Colorado River, and boarders Lake Mohave; I feel that there is a large demand for boat/rv storage. 

Sounds like there is good demand. 

Then when market crash your's will be in demand. 

In no particular order I have listed some of the most popular markets for out of state investorsCincinnati, OhioDayton, OhioToledo, OhioYoungstown, OhioCincinnati, OhioMemphis, TennesseeSaint Louis, MissouriIndianapolis, IndianaDetroit, MichiganErie, PennsylvaniaLouisville, KentuckyMilwaukee, WisconsinJackson, MississippiEach of these markets is popular with turnkey investors because of the low barrier to entry, high rental demand & high rent to price ratio.

Hot water on demand is great, but it is way more expensive.

Grand Prairie is a great area with huge demand for rentals.

This seems drastically low and only a 30% rental demand.2.

If the buildings are in high demand the seller will likely ask for a nonrefundable earnest money deposit in competitive markets.Land is different.