Noise under the bed has been an issue for me. Engel 60 for the record. It's not real loud, but the "hum" is enough to wake me when it kicks in.
My solution in warmer weather is to just leave it out when safe, and in winter I simply turn it off before closing up - still cold in morning.
Also, I've found a bottle of McLaren Vale shiraz before bed somehow makes the fridge quieter, though not sure how.......
Cheers,
Cam