I will say that even though you get the boost from VRBO and AirBNB, the first year of operation is usually lean as you build up the rep.Offering a discount on the stay is a way to be more attractive but don't go crazy.

They said they would but wanted the park's balance to be discounted.

Are there issues that you think you should avoid regardless of potential for discount? 

Quote from @Kody Smith: without getting too deep into my finances, what my strategy is...1. take loans to buy properties (leverage)2. fix/flip for day to day cash flow income3. use some of the fix/flip income to buy consistent cash flow through:- business acquisition, - commercial properties (MF and store fronts),I have no intention of doing ALL of the management myself, I will hire management as needed (medium term goal)my expected core role is money provider, evaluating the numbers, making decisions, and connecting with investors, wholesalers, lenders, contractors, and property owners.while I am just on step 2 of the journey, I am looking toward step 3 to stabilize, and not worry about if house prices drop mid project or not (or not worry as much) So to be fair this is more about obtaining and growing a real estate business not simply buying rentals for cashflow.

Since this situation was so egregious (IMO), I would either boot them out now, or at least have a serious talk, real serious....If you're going to let them stay I would just get a really deep cleaning done, maybe a couple, and then replace carpet after they're gone.

In exchange, he gave her a small rent discount and even helped her relocate some of the larger items.

For the past two years, I’ve been diving deep into the world of real estate, and I’ve accumulated over four years of active experience in acquisitions.

Dig deep into tax strategy, tax efficiency, etc  Learn about estate planning. 

There aren't many co-ops in Southern California, mostly in LA or a senior community in Orange County, but there's not much of a discount between condos and co-ops - at most, 10%.What is your source of the 10% difference data?  

Hosts can get involved by either donating a portion of rents from their payouts or they can offer housing at a discounted rate.