Tell him that you are running out of funds and you hadn't planned on the extra 20% he's charging on each bill. 

Your best bet would be to find a portfolio lender whose niche aligns with your investment strategy. 

I'll bet you a cup of coffee no one has working keys.

For example, my cleaner and handyman at my STR have separate cards so the only thing that ever gets charged to that card is that expense.

Kieran, the best bet here is to refinance with a DSCR loan.

I think hard money lender to take this risk cannot legally charge appropriately which means the law is working against you (the law meant to protect owner occupied owners from unfair loans).I agree with @Jay Hinrichs that your best option likely is to sell on the mls.  

Unless you are unknowledgable, my bet is you could make more from rent than sale, and still have the benefits of owning the original home while you go do something else.The 25K you have left in property will be netting you(gross) of $350 mo or 4200 per year.

Your best bet is to find and contact all of the top local wholesalers and go to work for one of them and see what they do right and wrong and see if it's even a business you like.

I bet $1 this a bot. 

When you have a duplex and tenants on both sides stay for ten years, it almost guarantees that something isn't right.I would study your market and determine the value of your rental, because I bet you are losing money every month.