Also, what dangers should I look out for?

(Which I believe you mean when you say tiny house).You can't steer certain buyers to your neighborhood and steer others away, the Federal government won't allow it.Because of the low price point and the (lack of desirability for most mainstream buyers to live in them) I think they will soon turn into very low cost dangerous slums (like some standard trailer parks are) with endless Police problems.Just my 2 cents.

Comes with the territory managing hundred of properties.

In reality, the city is dangerous and slummy and visitors discover that the streets are not lined by local stars and the scent of orange blossoms but panhandler, druggies and the occasional waft of urine.The big ticket, get-you-while-you're-on-a-high seminars might offer some content, however when we're new, we're in overwhelmed mode still trying to understand how real estate (or any other) business works.

Do not invest in any city on Neighborhood Scouts' list of the 100 most dangerous US cities.Low operating cost - High operating costs can turn what appears to be a profitable property into a money pit.

1) You would be living very dangerously with such a deal, unless you have plenty of reserves. 2) A big part of the problem is using a loan, becoming a slave to the lender - you do all the work and have most all of the liability, they have enough of a down payment that they have little risk.

But sometimes too little knowledge makes people dangerous, they often rigidly act on rote or hearsay rather than facts.

No, a CPA with an IQ over 70 will know how dangerous it is to publish this "opinion".  

I think it's dangerous to try to attach emotional ideas for why a market does or doesn't value something, but like I said I don´t have a great reason. 

Do not invest in any city on Neighborhood Scouts’ list of the 100 most dangerous US cities.Low operating cost - High operating costs can turn what appears to be a profitable property into a money pit.