I would prefer to go with a established company (rather than an individual hustling on the side) with streamlined processes, transparent online accounting, and a long and strong track record. 

I'm simply planning to buy the homes in working class, relatively safe areas, fix them up well and furnish them and rent the rooms individually to make minimum 1.5-1.7 times higher than normal rents by including their utilities.

Definitely you cannot do this in a taxable account purchasing individual stocks.Certainly Roth accounts have no gains tax regardless if used to purchase stocks or RE.

@Neal Collins You're right that the new Podio (Citrix) business model doesn't help individual investors but if you've used GlobiFlow previously you should be able to continue using GlobiFlow using their old pricing scheme.

It also states, "Unlike the ownership requirement, each spouse must meet the residence requirement individually for a married couple filing jointly to get the full exclusion."

Like Alicia mentioned, typically not advertised you will want to get to know the individuals.

One of the great things in life is there will always be leaders, like you, who provide the tools for those lucky individuals that do have the ability to take the time and focus to master it!

About the refinancing topic, it will most likely be hard as normal banks in Spain are currently not providing these loans to individuals.

Declining an investment only because of the absence of a sizable co-investment, even when all other aspects of the offering are exemplary, is an individual choice--right, wrong, or indifferent--it's the LP's money and it's the LP who should sleep well at night.

WLI as a strategy seems more aligned to high net worth individuals who already have $ to burn, already overfunded their Backdoor Roth IRAs, HSAs, and R/E investments versus the average investor that’s still working to reach $18k/year on matching 401k dollers.