I have provided them a letter from my broker about the amount that can be used.

We even did a mid-year check in meeting in person but felt like he did not provide us any guidance.

If the guest feels slighted, there is no fact checking service provided by AirBnB to confirm their claims, so it is up to you to let future guests know the level of professionalism you provide.If you are able, I would recommend editing your response to the 1-star review.

I think this will all start making more sense once you start analyzing deals and working with an agent that can provide some insight. 

We have both always been interested in forming some partnership in which I do the leg-work and he provides the finances.

The reality is the opposite - if it's not in writing then the PMC doesn't have to provide the service or can charge extra for it!

Quote from @Roger D Jones: SamEveryone here is providing great points to consider and if you were my son I would say that at 360k this 'dog needs to get put down'. 

Also, did they provide you those terms off the bat or after explaining your project?

A lot of the beach rentals down there are pretty outdated and don't provide many amenities.

Be sure to check out the free tools BP provides to help analyze deals you may have and also market insights.