Also, make sure you have a great property management company who can be your "boots on the ground".

I work for Evernest, a full-service PM company, here in Birmingham. 

Through my studies, I met my current employer, who owns a construction company where I serve as the Sales Director.

Go search the topic "Lifestyle Asset University" here on Bigger Pockets and you will see a longer thread with a lot of opinions (most are not members) but still worth a read as there are a half a dozen paid members from our group who have commented on that thread.We were formerly called Lifestyle Asset University, but I didn't realize that you couldn't use the word University in your company name here in Utah so we changed our name to Vodyssey. 

It's up to you how far to take this though.When we're faced with this, we try to hold the tenants accountable, by pushing hard to do self-showings.- Who better to show the house and speak positively about than a current tenant?

-----------------------------------------------------------------------------------------------------Recommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

I hired an IRA-approved valuation company to value that note at that time.

One thought was to replace to large commercial tenant with a company that had a similar profile.

Many rural water companies are near capacity.

It may be that they are underwriting the property at a significantly different valuation than what you are using or that they feel that you or the deal is excessively risky.Great advice here, and a good HML will have an account rep or someone to communicate with you through the process so that you know.