I bought our apartment two years ago and this is the first I have heard about any off those rules, I would agree towels on balcony's not very good, I hang mine out to dry on a clothes horse and no one can see them. I take my rubbish to the bins at all times of day.
Hope you enjoy your stay on Coto Real Vicki as there is some lovely people who own apartments on this site, it's the best thing we have ever done.