(An investor has already offered me 205k to take it off my hands)2.It’s a wedge deal, I gave myself plenty of room Incase values decrease.

My first bit of advice would be to get here and use your TLA (temporary living allowance) while getting a feel for the island before making offers. 30 minutes of driving on this island will take you through 5 completely different towns with different feels, traffic, home evaluations, etc.

Is there any other recourse I can take against the buyer to recoup any costs or decrease in eventual sale price?

We may have slightly decreased the value by opening up a wall to convert to a one bedroom but our purchase price allowed us to do this without losing much equity.

I would think it would either do nothing (too much losses already and I am not a real estate professional), OR decrease tax owed.

Here's the first post, admittedly written quickly: - SBA guaranteed- Renters or owners can request loans- For people who are affected by C19 virus and consequent economic disruption: - Needs a standardized and easy loan process; RENTERS: people bring in their credit rating, proof of rental payments, notice of layoffs or decreased income from job

(I'm not using these numbers to calculate my ROI or Cap Rate, just to get me through a possible long temporary vacancy if people decide not to move due to this whole virus thing)   The true holding cost would be around $660/month (including principle, interest, taxes, insurance & maintenance). 

I am listing my townhome as a shorter (medium)-term fully furnished rental (30+ days required but less than 1 year, not Airbnb) and am planning to appeal to travel nurses, interns, and maybe those who just need some temporary furnished housing for a few months. 

https://www.nydailynews.com/coronavirus/ny-coronavirus-senator-gianaris-calls-for-rent-suspension-new-yorkers-20200319-unw3kcrtbnhvbnvkvymskhjdv4-story.htmlI'm not sure what to say other than a 25% decrease in annual revenue (and three months without any) would be catastrophic for almost everyone I know in the business. 

The economy won't be wrecked forever, this will be a temporary blip that is hard for many but we will get through it together!