It’s never as simple as it first appears, which is why we always advise our clients to let the math guide the choice.

They're looking for a stable market that is gobbling up houses just after a slow period so they can still get good deals on land before it gets hot and popular again.  

Remember when land buyers pick a target, they have TONS of work to do getting that property from dirt to payday, so they know their purchase choices, and they have a war chest usually stacked up ready to go.

For STR, AirDNA is the most popular option of course, but the pricing model per city is rough (if it's still like that).

The app is user-friendly and integrates with popular CRMs, making it ideal for both beginners and experienced investors.

So, an area might have been D class 20 years ago and is C class today in terms of what the property condition, crime etc show you BUT if the tenants still stigmatize the area in their mind then mostly D class tenants will be applying there because they have less choices.

And some markets are going to be a lot more popular for the average BP member ( which to me is heavily slanted to starting out) At least from the post we see.  

Mostly people with minimal RE experience are adding a single ADU and they often make that choice based on cash flow without taking into account the negative equity position.  

Sounds like the velocity banking stuff that was popular for a while.

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.