Upgrades for Diamond Hilton Honors Members may include upgrades up to “junior”, “standard” or “one-bedroom” suites. Upgrades exclude executive suites, villas and specialty accommodations/floors/towers (which may include, but not limited to, "Vista", "Villa", “Club”, “Imperial,” or “Residences” accommodation types), subject to the discretion of the hotel. Group reservations and certain rates are not eligible for suite accommodations and may not be eligible for complimentary upgrades. All upgrades are granted on a space-available basis for the entire stay, as determined at the time of arrival. Preferred rooms are identified by each individual property and may vary within each brand. Upgrades will be given only for one room for the member, regardless of additional rooms the member may have purchased at or after the time of booking. The following brands do not offer complimentary upgrades: Embassy Suites™, Hilton Garden Inn®, Hampton by Hilton™, Tru by Hilton™, Homewood Suites by Hilton®, Home2 Suites by Hilton®, and Hilton Grand Vacations®.