Unfortunately, I think you should eat the cost on this.If you have a door that can lock, you should provide the key.

I think you need to find a good local agent, network with investors(local meet ups, FB groups, etc) and learn more to dial in the gameplan. 

You may want to start with the BP agent finder for those markets and then work with them to find good PMs and lenders.

A lot of the beach rentals down there are pretty outdated and don't provide many amenities.

When you find good ones, try to always keep them busy. 

We have all the resources and an incredible network yet we will still have students who will not put the effort into find a commercial deal. 

@Cosmo DePinto, I can provide further insight on behalf of my market.

They didn't pay for it, so they don't take care of it like an owner.Before you make assumptions about costs based on a seller's contribution to improvements, find out what they improved? 

Where do you find your deals?

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.