If the noise bothers you, unplug the fridge. Leave the cord over the thing so that Housekeeping can see it and plug it back in when they put the room back in order after you check out. Sam goes for the alarm clock, TV's which don't really shut off unless separated from their power source and anything else that glows or bothers you.

All of these things are with Managements ability to control and certainly ought to be on Housekeeping's checklist before the room is cleared. If Management has cheezy old fridges when there are new silent ones out there, the consequence is that staff spend a few extra minutes a day plugging them back in.

There are things you can control and things you can't. Nothing to be done about creaky A/C other than shut it off and that is a tradeoff. But, before I spend 10 minutes figuring out whether there is an alarm set on some complicated clock, it's just as easy to pull the plug and know that it won't buzz.