That's my personal style; not threatening or hostile, but more of a " hey, lets see if we can get this back on track, otherwise you'll probably have to move back in with your Mom...".If your money is so tight as the landlord that you are maximally stressed over rent coming a few days late, you need to work that out on your end and not create a problem where there really isn't one. 

Age or properties, appraisals, past credit and business experience could also play a role.

What are the most promising alternative lending strategies for financing RE developments given the rising interest rates and tightening credit conditions?

@Katie Berry  give them a choice of a month of gym membership or the rent credit you suggested. 

**Organized Transactions**: QuickBooks automatically tracks and categorizes your income and expenses, making sure everything is in one place and easy to access.2.

Good luck"will ding their credit", is that always true?

In the meantime, get a Home Equity Line of Credit (HELOC) with @Michael Barbari , who can do up to a 90% loan-to-value. 

For borrowers with low or mid-range credit scores, what are some strategies for securing hard money loans?

What are the pros/cons of a portion of the monthly rental amount being applied to the final purchase price, vs. no credit of monthly rent towards eventual price?

Removal and examination after ceiling drywall removal revealed the water tracked along a joist and saturated the ceiling from a focal point along the joist.