Some of the great luxury hotels offer the following:
-- when you leave your room--housekeeping immediately enters and changes your linens in your bedroom and bathroom--no matter the time of day.--

--housekeeping never knocks on your door until they are certain you have left your room--

--room service is staffed by a 24-hour kitchen offering a complete menu (whatever you want at any time of day)--
--ice buckets are filled every afternoon--
--mineral water is complimentary--
--great water pressure in the shower (amazing how many old, legendary hotels have crummy water pressure)
--wood or satin hangars in the closet which can be easily removed--
--A concierge who can be counted on to make a last-minute restaurant reservation; last minute theatre tickets or repair a shoe or a fingernail--

Just a few thoughts--will likely think of more--