Is it better to use central air conditioning or stand-alone air conditioning in hotels?

It's better to use a single room … it's more convenient … it's also more energy-saving and humanized … What needs central air conditioning is the grand ballroom and conference room of those big hotels, where the space is large … the single room takes up a lot of space … but it's better to use a single room in the hotel, because the room is not big and it's more affordable.