Hint Health Summit room block main dates September 19-23, 2023. Reserve your room at the special group rate of $359 per night plus taxes before the room block closes on August 23, 2023 or fills up! You may also call the Marriott Luxury Brand reservations at (866) 837-4270 and ask for assistance in booking the “Hint Health Summit” rate. Room cancellation policy is to cancel 72 hours prior to the booked arrival date. Valet parking is $57/day, parking rate subject to change. We do not offer self-parking. Check-In: 4pm; Check-Out: 12pm. We look forward to welcoming you to the historical US Grant Hotel!