DALLAS — Berkadia has negotiated the sale of the 160-room Doubletree Dallas-Farmers Branch hotel. The property, which offers amenities such as a pool, fitness center and a business center, recently underwent an $8 million renovation program. The buyer was an undisclosed 1031 exchange investor. This was the first sale from the 15-property portfolio Berkadia exclusively listed throughout the West and Southwest. The entire portfolio could fetch a sales price of $375 million.