There are always unknowns with flips and you always find some things that were unexpected.

They are good to make a property purchase but not a good solution for longer term financing.They're also helpful to have if you don't have much funds in reserve in case an unexpected large expense comes along.

Not unexpectedly, they were not happy and are "looking for new places." 

He emails me every other day or so to complain about the noisy roommate.Today's email is requesting me to install a lock on his door so he can lock his room, because he is going out of town over the weekend, and doesn't want his roommate's friends to sleep in his room, or accidently damage any of his personal items.Should I agree to do that for him?

If a guest went out of their way to comment on cleanliness, THEN I might consider some sort of (unexpected) bonus, but I would not reward DOING THE JOB AT HAND with more money.

Additionally, unexpected surprises and setbacks, such as the paint incident, taught me the importance of flexibility and adaptability when faced with unexpected circumstances.

For example one property I have just banned STR and anything under 6 months, that was a big hit for people that were doing AirBNB and unexpected to the model.

I had asked for homeowners, along with liability insurance for any accidents/claims made by renters/guests in the property. 

Renovations often encountered unexpected obstacles, and finding suitable tenants took time.

It felt like a true haven for our two big dogs, Max and Bella, who explored every nook and cranny with wagging tails and boundless energy.However, life has a way of throwing unexpected curveballs.