1.  Even with the qualifier "basically," the term foolproof is a vast overstatement.  Uncle LEO can fake reviews.  Uncle LEO can turn well-established providers and clients.  There are no guarantees in this game.  Caveat emptor.  

2.  The "Right to Privacy" is at best a limited (and disputed) right in the U.S.  The U.S. constitution does not explicitly grant a right to privacy.  Strict constructionists often argue there is no such right; civil libertarians often argue that there is such a right.  There is a line of Supreme Court and lower court cases that rely in some form or fashion on an implicit right to privacy, but those cases only apply to certain limited situations.  Examples: birth control (Griswold v. Connecticut); sodomy laws (Lawrence v. Texas); abortion laws (Roe v. Wade).  [Modified to add: note that the Bill of Rights is largely designed to protect private citizens from the government, not other private citizens like hotel owners, so much of the Bill of Right's protections just would not apply to the situation you are thinking of.]  Also, most states and the federal government recognize some liability for damages in civil cases that may look and feel a bit like a right to privacy: misappropriation of name or likeness, libel/slander, false light claims, etc.  But obviously, even if there is a right to privacy it has limits in our current system - think about wire taps, police surveillance, etc. that can be perfectly legal.  

3.  Your hotel example is not a very good case for asserting a right to privacy.  The hotel owns that property.  They have rights too.  They wouldn't be able to get away with filming you in the shower without your consent.  But they can certainly respond to a noise complaint.  And they can certainly call the police if they think there is any illegal activity on the premises.  And the police can set up surveillance with the hotel's cooperation.  So the idea that a hotel manager could knock on your door and you could make them go away by invoking a right to privacy is far fetched at best.  You're probably best off just letting the girl answer the door and hanging back out of sight.  If it's a noise complaint, she can politely apologize and agree to be more quiet.  If it's Uncle LEO charging through the door, there's not much you can do but play it cool and invoke your 5th amendment right to remain silent if needed.    

-- Modified on 8/31/2016 10:23:14 AM

It wont ever happen unless you are sooooo loud but....

Imagine being in a hotel for a family vacation, or a business meeting for your company. Now imagine a manager knocking on your door with "What is going on?"

In that situation you aren't guilty of anything so what would you say and how would you react?

Now take that reaction and use it in an escorting situation.

Unless they are in the room with you, nothing can be proven, only speculated. Therefore it is none of their flipping business and your reaction should fit that truth.

Manager knocked on door because girl had stayed an extra day, and not paid for it in advance.  Mgr said she had to go to the desk to pay.  Provider said the wrong things and the conversation went from bad to worse.  30 min later security opened the door with a medical team waiting outside.  I tried to run but was blocked by one medic who was 6'8 350 lbs.  Police arrived and questioned us separately.  We were both escorted out of the building about an hour later.  She was banned from the hotel and I was told to have a nice day.  Did get a parking ticket because was parked at a meter which ran out of time.

-- Modified on 8/31/2016 9:47:10 PM