The Round-Up: Friday By Observer Staff • 03/09/07 8:33am Saving a seedier Greenwich Street block. [NY Times] Court allows Washington Square Park renovation. [NY Times] Fed: Americans loaded up on mortgage debt in ’06. [NY Times] City wants to spend $100 M. for Atlantic Yards land. [Daily News] Last Brooklyn roller rink closing. [Daily News] Did we miss any New York City real estate news this morning? Please send along tips and links.