I use it daily and find the results vary by property from very accurate to wildly inaccurate. 

(Which actually matches what really happened...you didn't pay anybody, and you didn't receive any pay for your stay.)In other words, there are no phantom expenses.  

I'm getting some mixed results when I expand the number of tools for analysis that I'm using...

I would sell the properties.4 rental properties over 3 years won't make you much money.Maybe 100 per door per month in cash flow and a matching amount in appreciation.That is $9,600 over a 3 year period assuming you have SFH's.You are improving your ability to make more money in a better position hopefully when you complete your master's degree.You will make that $9,600 working 2 weeks.The sale of the home will hopefully allow you and your wife be stress free for those 3 years helping you make a higher hourly rate.

This can result in them being unable to provide the assistance needed.

As a result I purchased 5 units in different buildings at 1/3 the price the seller paid in 2007 -2008.  

Retirement 15%  Realtor do not have matching contribution or pensions $1101Health Care for 1  (Florida Blue 43 yo Male)  $350 a month

Which one is best to mail to for results?

Provide direct booking site and mention the resulting savings.  

As others have pointed out, this well-exceeds the current averages that we're seeing.With that being said, one situation that I've seen lead to this result several time over the past few months is an active rental listing being stuck in a cycle of chasing the market down.