My first thought would be a "forced" saving plan.  

If they don't have it in writing already then force them to put it in writing.  

I would expect that someone in NYC ought to calculate the positive economic impact before trying to prosecute the participants.Linked Taking the Work Out of Short-Term Rentals

Can't you just sue to force specific performance?

The bank is unlikely to renegotiate with you or anyone else unless forced to.  

My "day job" is running tech (mostly software dev) for an internet startup, but I'm realizing that I'm not a city guy and all of the demand for my tech leadership skills force me to be in New York City.

could i be forced to pay any money? 

I'm just about your age too, I started with a Capital One as my first credit card, then opened a Citi Card as well, if they see you paying off your balance in full every month they will gladly increase your limit and you will start getting tons of cards in the mail, don't go too crazy though as applying for too many cards in a short period of time will negatively impact your credit score. 

This will help force you to write down all of the costs (including capex, maintenance, vacancy, taxes, etc) to help you think through some things you may be overlooking.http://www.biggerpockets.com/buy-and-hold-calculatorWith regards to the wood paneling you have a few options with the walls (I would leave the ceiling).  

Let your insurance company know fast, quick and in a hurry and hopefully your liability insurance is in force and in an amount that is sufficient to keep the plaintiff's from trying to pierce your LLC.