My suggestion to you would be the nicest resort you can afford, or call your credit card company to raise your credit limit.

...I would think along the lines of any of the Marriott or Hilton brands in the medium range. That should be fine. I'm surprised she hasn't had a review for such a long time. She's very pretty in those pictures. I wonder how recent they are? You could maximum your return on the cost of the room and try to see another lady the next morning before checkout.  
Good luck and I can appreciate your need to gather some reviews. They will only help you.

And looking forward to reading a review!

starting at Camelback Rd, north up to Doubletree you'll find lots of opportunity. Remember sites like priceline, hotels.com are your friend. More bang for your buck.  

You do know that snowbirds are here escaping all that arctic weather up North and back East ?   Truly, I wish you luck with your quest.  
A little advice. If you have a significant other, make sure the hotel knows to keep your information private. A clueless desk person can wreak havoc if an SO calls up to "verify" the bill, or some other ploy to get info.

Her site says incall can be provided in Phoenix for $100 extra. Just FYI.

I'm sure I'll take some heat for this but WTF....
So if this is one of your first rodeos, make it one of the most memorable events in your life. Ginger has to be one of the most beautiful ladies in a town of beautiful ladies, so,   G O   B I G ! ! !

While you did choose High Season to jump in (bad timing for hotel/resort pricing), make it special for you and her.  Check out a combo spa/couples massage package at a decent resort and see if they have a food credit available.  Lunch, couples massage followed by a spin in a hot tub before the big show.  

Figure it out, and contact her with your anticipated plans, and just ask her if that sounds good, and how much time you should anticipate to schedule.  

I did this before rates went crazy, and the the resulting time together was mind blowing.  But this is also with someone that I've got a pretty good long term relationship established and she clears her afternoon when we do stuff like this.  

You could be in for the ride of your life!!!!!
Let us know how it works out and best of luck to you!!

thank you so much to all of you for these great words of advice and support. I asked her for places that she would recommend and she gave me a list. Will probably be booking one of those.

Was informed today that there was a family emergency and the appointment needs to be made some other time. Back to step 1
Thank you all for your help.