Consider the fact that signing a lease with each of the 4 tenants separately and independently will be very time consuming, and will likely put you in a position where you will be expected to mediate disputes between tenants. 

Ironically air conditioning is not which many here would differ

It is consuming more time than I would like. 

I'd also recommend consuming as many podcasts, blogs, and articles as you can on unique STR opportunities.

Showing is time consuming why would you show to someone who you won't be renting to.

So many of MFR deals are off market and appraisers aren't always educated/slick enough to figure it out if it is outside their vanilla consumer cookie cutter neighborhood appraisals.

For example, if you could show that an average 2BR unit with the same number of people consumes $100/month worth of utilities and they are consuming $800/month, their usage would be so far about of normal expectations that they could be found liable for the overage.

I found it too time-consuming with properties in several states. 

Banning smokers for bars/ resteraunts IS tyrannical, NO you DON'T have any right to mandate the bar can't choose to have a smoking section because you don't want to be around smoke, freedom means the bar has the right to choose AND you as a consumer have the free right to choose to be in that setting or go to a non-smoking bar.

Curious if anyone has experience with a document storage company (such as Iron Mountain or GRM).