While we aren't very big we still want to keep a professional feel with all of tenants. 

Very happy & Excited to be here!!!

Of course it is very important to do proper due diligence on the investment and the operator.As far as self-directed IRA there are number of companies offering such service, this topic has been discussed here on the forum many times so you should search using this keyword and learn from those discussions.

@Jesus Gonzalez - The best way to approach this question is to talk to a mortgage broker or local bank lender.

Just be sure to research reviews first.Wishing you all the best on your co-hosting journey!

Your local credit union is definitely best for when building a primary 

To guarantee you are getting the best/newest data you must get it yourself or pay someone else too.

If you're willing and able, I do recommend the "house hacking" strategy which is just a fancy name for buying a rental property and living in one of the units, because you'll get very favorable financing - an owner-occupied fixed-rate 30-year mortgage.I'd also say, analyze that property as if you won't live there and it's a pure rental, and make sure the property is still cash flow positive if there's a tenant in your unit because then you'll know if it's actually a good investment.And when you analyze it, include payment of a property manager in your #s because if you don't, and doing so would make it go cash flow negative, then you've just bought yourself a job because you literally can't step away from managing it without losing money.

What seem to be the best zip codes for rentals?  

Two identical homes located next to each other would come up with the same value, even though House #1 was just renovated to a very high standard and House #2 hadn't ever been renovated since it was built in 1949.I always tried for an identical (or nearly so) beds, baths, sq ft of living area, garage and acres.