In New York it is illegal for anyone to rent out a room in an apartment in a multifamily building for less than 30 days if a tenant is not present. Yet almost weekly, someone writes to Ask Real Estate seeking advice on how to skirt the rules. What if I swap apartments? What if nothing is in writing? A reckoning could come next year as the state and city attempt a crackdown on renegade hoteliers while the online company Airbnb lobbies for a change to the law.A recent Quinnipiac poll found that 56 percent of the responders thought New Yorkers should be allowed to rent rooms out to strangers …READ MORE