What's the downside? 

The only downside is the wait time for the payments to process.

That’s not the downside.

Speaking about the peso fluctuations, you can see it as a negative because you might be concerned about the peso getting even cheaper or as a positive because the peso is at a historic low and you might therefore think there's more upside than downside potential.

One can ask about policies, procedures, auditing, who is doing their accounting, or any manner of things to attempt to thwart the downside risk. 

Only downside is they required 25% down.

I think the worst sizes are 5-8 units, you deal with all the downsides of MF like commercial financing, fire inspections, parking lot management etc, but they are too small to reap most of the synergies.Milwaukee has a lot of duplxes and for first time investors that's a great place to start and expand your income with cash flow.

In the Washington DC area you have to have a strategy in order to cash flow, I buy them as owner occupied and stay in them for 1 year (the only downside) to get the cheaper rate is moving more often, I only buy into small buildings/projects so the HOA dues are low.

Downsides: The only potential downsides that I'm aware of besides the fees are that if I ever wanted to sell just 1 or 2 properties, when those sales close, the proceeds go towards the outstanding principal balance on the loan (I don't get the cash). 

brags with similar properties:1)you know the area/are local 2) rents seem realistic 3) appreciation more or less follows inflation and if you bought in line with market values and anticipated sale expenses then 4) you are getting a 7.9% return on your paydown--about twice the rate of savings accounts and 5) reserves.Congrats, you have limited down side risks and given yourself a chance to do very well if the neighborhood improves and rents increase.