The first part of Mold remediating is stopping the moisture issue  until you figure out that part don't bother with step 2 . 

We offered them 25% rent reduction in daily rent throughout the course of the 3 day repair, but they have countered with expecting a full days rent reduced for each day.

I'd personally rather stay at a hotel in BBL with daily service, cleaning and staff that I can talk to. 

I have an STR condo down here, and analyze STR deals for investors daily.

They also make those moisture meters, that I have had roofers use in my attics to attempt to trace back sources.As noted, in my market, if you have active leaks that you are aware of, they need to be disclosed when selling a property.  

Rates almost daily, move photos around, change wording.  

For example:  Milwaukee, WIAirbnb Rental Income: $3,452Airbnb Daily Rate: $128Airbnb Occupancy Rate: 59%Airbnb Cash on Cash Return: 4.22%Median Property Price: $476,223Property Price per Square Foot: $269Days on Market: 49I own 2 STRs in this city and the occupancy rate overall is about 20% according to AirDNA.

I've found some errors over the years, but mostly I am so relieved I don't have to think about accounting on the daily;)

Mold requires moisture and a food source (dust is sufficient).

Wondering how to figure the cash on cash ROI based on the daily interest calculation and accelerated payment.thanks