I would just take into account that a lower down payment will mean a higher monthly payment so be sure to run the numbers conservatively in order to ensure your STR revenue is able to carry your monthly payment with this higher mortgage cost. 

The 3rd party wasn't able to screen the applicant.

This is rarely an issue provided you still perform.The raising money part is more complex.

From my analysis—even with very conservative numbers—it looks like a cash cow.

I tried using the biggerpockets rental calculator this morning and the cashflow was negative, but I may have been too conservative with the numbers.

Most foreign buyers are high net worth individuals who want to park their money there in a safe haven and they don't need BP.No restrictions apply to American buyers in the countries they'd generally want to buy, including those mentioned by Federico and many other popular countries.When it comes to Spain specifically, some more conservative banks will ask you for a 40% downpayment (that would be the maximum) but that isn't the rule.

Usually the hardest part is coming up with the down payment.

It also keeps to a nationalistic conservative agenda, and without capitalism, it is just cuts to programs, and no investment into other areas. 

She's not going to have any leg to stand on in court if you get that far unless there's some explicit language prohibiting the owner from assigning responsibilities to another legally authorized party, and I'm guessing there isn't if another PM company was maintaining the lease and provisions - and the fact that the tenant was voluntarily working with the other PM confirms the acceptance of an authorized agent even if it's not explicitly stated, the same way if you accept rent from a tenant after a lease expires you imply acceptance of the lease terms continuing (which is why you should always have a holdover provision). 

But here's the thing: communication within the GP team can make or break a deal.When information doesn’t flow smoothly between team members, it can lead to confusion—and even worse, miscommunication with external parties.