Roofstock was super popular at that time, maybe still is, I thought popular must be good and the more popular the better. 

You can Host Finacial revenue tool to get an average of the income.

I have coaching clients who have had good success in other markets depending upon your goals. 

I have 9 properties in 2 states and 3 different counties.

Quote from @Luis Herna: ok, I do not have the PSA yet.

If you would like to continue to operate as a short term rental, you will need to submit a new STR application for this property and must go to the Board of Adjustment and be granted a special exception for staff to approve this request for a Type 2 STR Permit.The Board of Adjustment consists of eleven (11) members; you will have to get a concurring vote from nine (9) out of eleven (11) members in order to be granted the special exception.

Your cousin should contact the lender to discuss his options.If he rents it out, he must report rental income and expenses (e.g., mortgage interest, taxes, repairs, depreciation) on Schedule E starting when the property is placed in service.

The issue I have is that I am struggling to find serious partners to work with.

I have found 1st lien mortgages to be very profitable.

After all, you have no evidence they agreed to pay rent or any of the other terms.