I would probably focus on a single STR (if that was the route you went) and find something of slightly higher value for a larger proportion of accelerated depreciation. 

It appears everyone is a bit cautionary about the un-proportionally low OpEX. 

It does require excavating an alley 8ft deep, hydrojet line, backfill and bed pipe, compaction test, etc.

They have a huge service department in Boston and they track each and every repair on all appliance types and brands and keep it updated so you can get a real feel for the best choices.For those folks who have small STRs with limited space, the LG Washtower could be a good solution for installations where you can't vent the dryer and have a small area.It wouldn't be for a larger place like ours but for a 1 or 2 bedroom place, it could be a good solution if you don't currently have a washer/dryer.https://blog.yaleappliance.com/lg-compact-washtower-review?

My business and portfolio have grown proportionally with experience. 

According to AirDNA the top ten vacation rental destinations with the greatest proportion of pet friendly AirBnB listings are:1.

But despite it being a small town with a proportionally large military presence, I'm not seeing any mention of assumable loans on listings.

That’s what I was thinking too…and the capital gains would be deferred (and proportioned with each installment payment from what I understand based on the profit ratio). 

I had to learn this lesson myself: The engagement you receive on BiggerPockets will generally be in exact proportion to your contribution to this community!

A few additional thoughts, the platforms consistently push us to reduce or eliminate cleaning fees especially on short stays because of how much they are proportionally.