Why is this unit still on the market?

Having seen this apartment about a year ago, it was interesting to us - $899K for 1000 square feet and 1200 square feet of private outdoor space. Why is it still on the market, unsold, while 30 other units have sold already?

Surely, the last 5 units that were sold were in the general psf range and this one gets you 1200 square feet of party space. Sure, the townhouses across the street can ogle you while you party it up with your outdoor grill, but who cares?