At 457 West 43rd Street, there's a small duplex unit on the market for just under $900,000. The living space has 16-foot ceilings, and spiral steel staircase leads to the mezzanine level, which squeezes in two bedrooms. The brokerbabble details such gems as "a charming master bedroom with custom sliding barn doors," "a butcher block island with large storage drawers with naked pine interiors," and "a mezzanine vantage point perched above." It's been recently renovated, and it has top-of-the line kitchen appliances, plus a washer and dryer. It also appears that you could forgo the stairs and climb right up the wall.