Best place to stay in Lexington while attending the Rolex 3 day event?

Griffin Gate Marriott Resort & Spa is very nice and close to the KY Horse Park, but rates will be very high during Rolex. Embassy Suites located nearby is another good option, and maybe somewhat cheaper. There's also a Four Points by Sheraton Lexington by Sheraton near there. But rates at all of the hotels in that part of town will be high for the event.