Here is a wonderful hidden camera story about the extensive lengths your average hotel cleaning staff goes through to ensure those bathroom drinking glasses are spotless. And I'm sure every word of it is true and the norm.
Last hotel we stayed at, Natalie accidentally dropped a glass in the sink, taking a large chunk out of the side of it. We left the glass on top of the wet bar that was in the main part of the room. I was going to leave a note of warning but forgot.
Later that day we came back and the room was cleaned. That same glass was back on the bathroom counter with the little paper cover on top of it again. Nice.
Not that I'm excusing this sort of behavior, but one little bit of irony here is that I'll bet your average household bathroom isn't nearly as clean as your average hotel room, and thus the dangers of germs in hotels are perhaps even less than the dangers in your own house. But then again, they are your own germs, not someone else's. Around here we wait until the towels start walking away on their own before we consider a scrubdown, but we haven't caught a disease yet.