Property investment firm Quintain Estates said it made good operational progress in the first quarter as it delivers on two key milestones.The group said beds in iQ increased by 20% while it saw record reservations for 2010/11 academic year. The second milestone achieved was the sale of Pier Walk at Greenwich Peninsula for £97.1m."The recovery in the property sector has yet to become widespread or gather momentum," Quintain noted.Quintain added that it remains focused on fulfilling its ongoing strategy and expects the delivery of further milestones before the end of the calendar year.