Blue Ocean Realty, a Baltimore-based property management company, purchased a 171-room hotel, along with a 10-acre site that also includes a 50,000 square foot indoor tennis and fitness facility, as well as 32,000 square feet of office and retail buildings, in Pikesville, Maryland, from Mangione Enterprises of Turf Valley LP. DoubleTree by Hilton Hotel and Conference Center sold for an undisclosed price.