I've heard horror stories that it's usually impossible due to the "burden placed on the municipality" but could really never understand what that burden was... most people living in those units wouldn't be using the school systems so aside from maybe an increased volume in emergency medical situations I can not understand that statement? 

I have worked with many medical professionals where they adopted the basic strategy you are trying to use.

However, I am seeing more interest in MTR's and have a colleague that does well buying condos and renting out to traveling medical workers and foreign exchange students.  

I guarantee you don't have the right to "sell" that property as you've done because the bank has a lien against that deed which must be paid if/when you sell, and you almost guaranteed to have language that you are supposed to notify the mortgagor if/when you sell the property so that they can exercise their due on sale clause. 

So if there is any kind of physical harm to the tenant say due to slipping on the stairs etc. the tenants renter insurance will cover the medical cost.

because we have a strong demand for them and great str laws.The Triangle is visited year-round by travelling professionals in the research, medical, IT, and education space.

Learn from the exercise and do better on the next.Good luck! 

.: I just did this exercise - I liked ranking them so I could look at the big picture. 

I started my professional career in medical device sales and still do that full-time.

I am primarily hosting traveling medical personnel because there is a lot of demand for these professionals in our area and because my units are suited to their needs.