It happens sometimes. Can be unnerving I understand. But I just laugh now .
I joke and say ... you in or out? 😂😂 only because I've always worked in hotels for the numerous years. They are more embarrassed than you so don't worry. Many a time I've been fully nude or in the shower having forgot to out the "do not disturb" sign on. Most hotels know what the score is anyway
Most cleaners will be more nervous about their job or a complaint than anything else.
I'm sure the poor cleaners have seen every scenario imaginable.
I had a friend a few years ago who was a dominatrix had a cleaner walk in when she had a man handcuffed to all corners of the bed whipping him 😂😂
If there's anything I've learnt with this job is if you don't laugh you'll cry. 😂 giggle it off <3