The data the pull in the article is a few years old but it says that Nashville is in the top 10 of the highest revenue STR cities.

Keeping pets requires a one-time nonrefundable pet fee of $200 (per pet) as well as an additional $20 monthly rent for each approved pet.

Is saving the fee a PM charges worth the potential thousands in cost and headaches?

If you were to refinance property one and pull out another 100k (lets assume a 500k house in tampa that you need 100k for a down payment), you'd be paying 6.5% or so on that 100k. 

With all of our maintenance fees, property management fees, ext. we only brought home one check for around $800 last year.  

I started with multifamily but price expectations have gotten out of control.Just refinanced my multi-tenant retail property and pulled out much more cash than I put in. 

My lease has a sublet fee (2 weeks is guest by lease more than 2 weeks in a year is sublet) that is costly enough ($100/night per person which is about what a cheaper hotel is here) that makes sure tenants do not have others move-in without informing us.

Normally, you would charge a cleaning fee (ex. $250), then refund them back the remaining.I don't understand why some people say you need a seperate account for every tenant, that's a bit ridiculous especially since banks normally require min balances, so you'll end up owing thousands to the bank everytime you pay back the tenant's security deposit.

Real estate's "gross rent multiplier" is Wall Street's "sales to revenue",  "cap rate" is roughly "P/E ratio".When evaluating markets and investments I tend to start with GRM (or lazily the 1% rule), then attempt to return a cap rate based on assumptions about costs, then I work my way to multiple years of projections (assumptions about inflation, amortization, tax benefits, etc), and if I am partnering with one of my smart friends I have to pull up an IRR (internal rate of return).I also look at regional employment levels, median income to rent ratio in the zip code etc. 

When you add up legal fees, lease fees, loss of rent, etc. it can add up.