Housekeeping is a problem at many places right now due to staffing. But if you need more of something or if you've somehow been missed for trash-and-towel service, all you have to do is call. Just pick up the phone or make a quick stop by the front desk on your way out for the day. We were missed when we were at Riviera last summer. I called, they were friendly about it, and they came within 15 minutes to bring us fresh towels and take away our trash. No problem at all. It's possible there was an oversight in your case too, but they can't make it right unless you tell them about it.