Unless you have some sort of subject matter expertise or access to an unfair advantage (cheap labor, ways to source off market deals, etc.), index funds are likely to provide an equal or better return with a MUCH lower hassle factor and more liquidity.

You also have to be super detail-oriented, focused on continuous improvement regarding the property and guest experience, very in-touch with what it's like to be a guest at the property (and a cleaner of it as well), and focused on technological tools and opportunities. 

They claim to charge in the "high 4 figures" - one web source says it's $4800 - to join their group and get access to their network and resources.  

Each are great strategies to access capital and each has its pros/cons for utilizing the strategy in the best way.

I'll work on a old house any day over a new one, much easier to access everything, at least in my cases.

If we rent to own, they are OK, but we cant refinance because we don't have the deed.Are there any unique scenarios to help us get the property for little money out of pocket, we have the ability to have the deedSign a lease agreement with a purchase option that allows you to buy the property at an agreed price at the end of the lease term, consider establishing a partnership with the seller to jointly invest in property repairs and improvements.

Have about 50k I would invest (access to more), with excellent credit and good income too, from my full time job.

I'm just beginning but am considering a bigger commitment in the next five years or so by accessing some or even all retirement funds to buy a building (I'm sure people have thoughts on whether or not that is a good idea!).

I would focus on improving your credit and obtaining a more stable income so that conventional financing is an option. 

This gives you a foundation for making a fair offer.Secure Financing: Be prepared to show you’re a serious buyer with funding lined up, whether through cash, traditional financing, or a creative option like seller financing.Have a Strategy for Repairs or Development: If the property is distressed, outline how you’ll handle improvements to bring it back to productive use.