Our apartment complex replaced all our wall ACs with these things and they are the loudest AC I've ever encountered to the point I cannot run it when trying to sleep, which is wonderful as it's often 90+ at night. There is no difference in sound level between the fan speeds. I measured the noise level and it runs at nearly 80 db (not 60-65 like the listing claims). All three units in our apartment are that loud.
The lights for settings/temp control are also very bright but cannot be turned off. If you are sensitive to light when trying to sleep, have fun.