But my experience is like yours 90% of guests are reasonable, and the other 10% cost me an extra $100-200 for the month stay.

If you are really worried about liability, get a bunch of insurance policies like an extra umbrella or beefed-up property insurance. 

The only issue w/the keypads is then you may have extra maintenance calls. 

Sometimes it's better to only put the minimum down because the break isn't significant enough when you put down the extra 5%. 

You can not charge anything extra for a service animal.

I couldn't justify the extra cost by outsourcing until I tried a large mailing myself.  

Besides my current rent, I still have to pay an additional $1~2000 for the mortgage, etc.Pros:Better financing rates than for investment propertiescan manage it myself to save the PM feehaving my own place without worrying about rent increasesCons:May only afford a small townhome or apartment, not sure if I still want to live there after 5 yearOption 2: Investing in Out-of-State Multifamily PropertiesI could use my cash to invest in several multifamily properties out of state and use the cash flow to cover my rent.Pros:Potential to spread risk across multiple propertiesThe cashflow can cover my rent, maybe have extra leftCons:Additional costs for property managementLimited potential for appreciationHave no experience in managing OOS property, and I am afraid it will be annoyingI’d love to hear your thoughts or any advice you might have.

It’s an extra expense that you don’t want and most properties don’t have.

Any ideas on what I could turn it into to help generate some extra profit?

If I need any of them to do anything extra for me, I just work out a payment for that one thing and pay them by action.