Contacted a provider on City-Source, not rev'd.  I have rec'd private email via TER from her. She requested that contact be made that way. What should I do and not do when going to her room.  I have seen numerous providers but at their place, never at a hotel, and they have all been reviewed.  My concern is LE.

Let me know your thoughts.

You should be visiting only well reviewed ladies if you are a newbie to the hobby.  I have seen providers at their hotel.  In fact, it's more common than not that a hotel is used rather than their private residence.  If I were you, I'd politely cancel and choose a provider that has plenty of reviews by reviewers who have done plenty of reviews (7-10+).  As you start to gain more experience and instincts you will be in a better position to take a risk of seeing a lady with no reviews.  Keep in mind that there are other review sites as well that she may be listed on.

As a provider with no reviews (yet - have one pending now), there can be reasons that she hasn't been reviewed yet - one of them being her location.  If she's not in a popular TER area or if she's fairly new to providing, she might not have had a chance to get reviewed yet.

If you want to keep the date and give her a try, just remember to think with your big head not your little head and approach with caution.  

you would go straight to her room - no one at the front desk should question what you are doing but if you are nervous about it just in case, be ready to tell anyone who asks you are meeting a friend for lunch/dinner.  (I walk by the front desk of hotels all the time and never had to explain what I was doing there).

When you get to her room, if the girl who answers doesn't look like the picture or isn't alone or anything about the situation makes you feel uncomfortable, think with your big head and leave.  If you read the reviews alot of the men who had bad experiences had some tell tale warning signs that things weren't going to go well - seedy motel, girl wasn't alone, girl didn't look like her pictures, etc but they were horny and thinking with their little heads and ended up wasting their time and money on a bad time when they could have just stayed home and used their hand.

Well stated.  If things aren't right, his response should be "Opps, I must have the wrong room"--then bolt fast.

One of the hardest (no pun intended) things for new hobbyists is to let the big head do the thinking.

That's why I iterated he should check on other review sites just in case she's not on TER.  I wouldn't recommend a newbie try an unreviewed provider, though.  He'll be in a better position to try this later on once he's more experienced, has developed instincts, and knows what to look for if things get suspicious.