Sell, pocket $200k in equity, appreciation since they bought it, bank 25% for a new deposit in a year once they repair credit, buy two new second hand cars because they need them, pay off credit card debt, put a little extra to the side for increased rent payments for next 12 months, and reorganize to buy in 12-18 months... now they see the light, a chance to move forward, to not stress, and they're lucky the market increased so much... but if they struggle to keep it, struggle to make payments, then 10 months realize they need to sell, would they have as much equity, maybe, maybe not..  

If it was one felony in 1994 , with out all the extras it would be a totally different situation

Our two STR's came with locks that require an extra monthly fee if we want to change them remotely. 

I also tack on a $50 pet cleaning fee because there will generally be some extra cleaning related to pets when they leave.

To us, it's worth the 8% of rents and the extra costs in repairs, and they still cash flow well even with the extra expense.

Build a contingency budget into your plan by allocating an extra 10-20% for these surprises.To get ahead of potential problems, conduct thorough inspections from top to bottom before buying a property.

For example, I have small two teir rolling cart in the movie room/game room that provide extra space for drinks, glasses and ice, etc.

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

For example, if every lake cabin within 20 miles of yours listed on Airbnb seems super rustic and dated and "northwoodsy" (for lack of a better term), is there an opportunity for you to skew more modern in your STR design/style to help capture bookings with guests who are looking for that kind of aesthetic?

If you wanted to give them a few extra days at a premium rent, that's up to you; but they need to be out as you've rented the home.