The former Hartford Marriott Farmington hotel, which received town approval this summer to be converted into an apartment project, has sold for $21.5 million and is now under new ownership, town records show. The seller was CLP Farmington LLC, which is controlled by Robert Schlesinger of Freeport, New York, state records show. Jason Schlesinger, who is also an owner of CLP Farmington LLC, was the developer who said in July that construction would begin in late summer to convert the hotel into 225 studio, one-, two- and three-bedroom luxury apartments. The buyer was GF8 Farm Springs LLC, which is controlled by Yechezkel Landau of Lakewood, New Jersey, state records show. CLP Farmington acquired the hotel in June for $10.5 million, town records show.