If you’ve ever wanted to put your New York City apartment to work by trading it for a week’s vacation somewhere else, this might be the year. Surging demand and fewer listings for short -term rentals are pushing up prices in popular vacation spots and if you’re traveling with unvaccinated children you might well be looking for an alternative to a busy hotel. Mary Lowengard, a contributing writer for Brick Underground, joins host Emily Myers to offer advice from decades of experience swapping her Upper East Side co-op for places in Europe and the U.S.