You will find that people are successful in every market you mentioned but depending on your cash position, a successful rental in one location or the other might not be as ideal for you. 

I’m loyal with people who provide good service.

I haven't heard of any, but met with a few people in the twin cities last year.

Every tax season, I see people unintentionally overpaying the IRS.

Quote from @Vince Scipione: Yes, they are a popular choice where I live and work, however with the ever fluctuating cost of oil heat, many people have swapped over their boilers/furnaces to what is called a "Propane Gun" essentially it is a device that is affixed to the front of the furnace/boiler that injects the propane and ignites it.

I've seen some people house hack a single family home by renting out the rooms, but keep in mind that traditional lenders would not be able to use the income from renting out the rooms (known as boarder income) towards additional income on the application.

Also, I have undefined misgivings about two people co-signing a mortgage.

While most of the people are pretty good and probably have a thankless job, there are definitely some with the good ole boy network and very political. 

My company has a departmental structure however all of our staff members' phone numbers and emails are on our website so people can get in touch with whoever is best suited to tackle a specific issue.

I'm not sure why this is happening, but I seem to be getting a lot more people who want to cancel and get full refunds in the 11th, 12th or 13th hour than ever before.I found the hard "no" led to headaches so I switched to, "if it is rebooked, I will give you a refund."