There have only been a few times when I've felt the need to unplug the fridge, and that's only when it's very loud and rattle-y. Otherwise, they generally don't bother me. Fortunately, I'm a fairly heavy sleeper and have gotten used to some amount of noise in hotels (other room doors, ice machine, elevator, loud room fan, etc.). If I can control it (unplug the fridge), I will.

I'll also spread out a towel by the door if the bottom gap is large and a lot of light leaks in.