The main issue is that half of the acreage is blocked by a creek which I'd have to build a means to cross. 

Block off the fireplace so they can't use it.

I am unsure as to the foundation of the cottage, but the modular portion appears to have been a poured slab (approx. 5" deep) with concrete block skirting. 

We did get negotiate money from them to help with roof repair, but now know they were not honest on their disclosure.Our inspector missed code violations, HVAC issues, pipes that had been worked on and issues hidden that had occurred while sellers lived in the house, signs of drainage and water damage inside the house that had been painted over, completely blocked dryer vent...and we are finding more daily.We have had the house looked at by a structural engineer and HVAC techs that has told us we need thousands (likely tens of thousands) of dollars worth of repairs to make this property able to rent and come up to code for rental. 

Training them simply means you control the conversation and interaction not them.An example, a tenant calls and says, "can you paint my apt a different color, I don't like it".

The home is about 1 block to the beach...About 300 people, most of which have lived there their entire lives and  are retired, still believe it still is an old PG&E plant that went off line many years back. 

Stacie called, I had blocked off time in my schedule for her.

Folks vote for no more STRs, they are gone and you are out of luck.If there is a large block of condo's owned by a single entity, like a wealthy family or corporate entity, you are also in the same boat.

@Michael K Gallagher We originally planned to build three houses on the lots (1/3 -1/2 of a block).

SFH deal with schools, jobs, paint color, yard size, etc.