I've never had an issue in hotels, and agree with @nycman hotels have "seen it all". I was traveling this week, called for extra towels (at a Marriott property BTW) and the housekeeper who delivered them said "have a good time" . As long as you're following hotel rules, and not being disruptive, what happens behind those closed doors is fair game. I'd be more worried about variability in law enforcement while traveling, that is whether locals are more inclined to set up a "sting" operation online, I would exercise extra caution screening and selecting your providers and doing a "sniff" test for vice.