If there's strong demand for rentals, it may be worth considering a few quadplexes or larger apartment building. 

It depends on the size of the storage unit, your market, and the demand for storage space.

By forcing the prices to stay low, more people can afford to live there, which drives up the demand, which drives up the prices...

If your area has any demand for short term rentals, it might be a good backup strategy if you do run into a long term vacancy.

Duplexes are in high demand and if you find a deal on one, kudos to you! 

Such low rates is likely due to low demand already.  

In other words, how are you analyzing market trends, supply & demand, city's growth projections etc...

We ran into a few surprises during this time:Our lender, who had previously said we could use multiple sub-contractors through the rehab-loan process, changed their tune and demanded a single contractor be used.

Windsor is a great "small town" that generates good cashflow with moderate chances of appreciation (relative to the CT Market)Granby even a smaller town feel than Windsor, rentals are in high demand and rent prices are high.

Finding a place with high parking demand, but spread throughout the day, not all at once, proved too difficult for me at the time.