And let's recall that Fannie Mae doesn't have a monopoly on the secondary market, "fine, let's just do a Freddie Mac loan" is a very common solution (for those of us that do both).Hell, there are times where I'm doing the "let's do Freddie" solution that people don't even realize I'm doing it.

Which means that if I decide to denounce they will be all in big trouble and will have to pay forfeit (this is the last and most not wanted scenario for me cause I don't want to mess more the situation, I'm trying to find a solution here).

Could this be a solution? 

It's true that as of now, platforms (airbnb/vrbo) don't offer a solution for sellers of STR houses to leverage the goodwill.

I don’t doubt that this could be done once or twice; But I question how many silent partners with deep pockets that you can acquire which could create a sustainable thriving income stream.

Obviously if the underlying data isn’t growing as quickly then it’s not sustainable long term.

The solution is to do an initial walk thru before move-in with the tenant, have them sign off on the condition of the property, include language requiring that it be returned in the same condition it was in when rented (carpets vacuumed with no stains, hard surfaces cleaned, etc.) and collect a large enough damage deposit to pay for damages and necessary cleaning.

It's costly to get after fact permit but I have faith someone here might know alternative solutions.

Too many out there will toss out amazing deals that look fantastic on paper but if you know the market and the people that would be your tenant you'll see that their either a) not sustainable or b) seriously under representing the costs and overshooting the rental projections.

Its a lot of work though to constantly be changing it each time there's a booking, so @Myka Artis has a good solution there to automate using PriceLabs.