Some New Yorkers may soon be living in apartments roughly half the size of a city subway car. So the Museum of the City of New York decided to install one and have some New Yorkers try them out.

Over a four-day period this week, five locals are taking turns living in the micro-unit apartment that the museum set up back in January. That month, Mayor Michael Bloomberg had announced that the city’s contest to find a micro-unit design of about  250 to 400 square feet had found a winner: Actors Fund Housing Development Corp, and nARCHITECTS will build the city’s first 55-unit micro-apartment building in Kip’s Bay.