You can probably find good deals in Tampa right now, but I'd be very strategic about where you buy and yes, insurance and taxes can be killer, but there are plenty of investors there and for good reason. 

The reason is the rent-to-price ratio is good so you can cash flow, and most of the West side doesn’t have a Point of sale inspection which is really annoying.

What's a good IRR for this multi unit retail business?

You should reach out to @Melissa Haworth she can get the actual numbers/rents on STRs in the area to help run your comps.Each building is different, each area is different, it is important to find accurate data to make good decisions.

Good luck with building your portfolio again!

I don't know of anywhere with good data.

I’ve learned that it is a very expensive ordeal but having a good lease helps remove the tenants faster.

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

OR they are investing in areas they think are good, but that usually aren't.

If you have strong market knowledge and the ability to find deals, working in acquisitions for a syndicator or a real estate private equity shop could be a good fit.