One source of cities to avoid is Neighborhood Scout's 100 most dangerous cities.Disaster Risk - Some parts of the country suffer frequent natural disasters.

There are locks (you frequently get them on airbnbs) that have a set of 10 or so codes you can program them with.

Don't invest one penny into real estate or any type of investment until you have enough knowledge where you can tell other people what to do rather than asking questions.You cannot trust anyone to help make decisions regarding your investments because everyone has THER OWN PERSONAL AGENDA and that agenda is frequently focused on getting hold of your cash.Personally, I find that 99% of the information in videos and books is totally useless.

One source of cities to avoid is Neighborhood Scout's 100 most dangerous cities.Disaster Risk - Some parts of the country suffer frequent natural disasters.

They deal with investors frequently and would be happy if you brought a deal to one of their investors.

Frequently, a portion of a residence is used for business purposes (such as a home office/rentals).

I've seen E&O carriers spend more money on forensic examinations of computers then the loss so as not to assume liability and frequently the forensic report is vague as to what the examination found.   

If I have a tenant who is hard on appliances in general, they are rather frequently not someone whose lease I want to keep renewing.

The negatives I would imagine are frequent turnover of tenants, cost, and time for repairs.Is there any kind of other value add other than raising the rents? 

Or if the client is trying to sell a mixed use asset like a convenience store restaurant or motel, they will frequently try  to negotiate higher allocation to the land and building and a lower allocation to the FFE (fixtures and equipment) since only the land and building can be included in a 1031 exchange.When and if you finally sell without a 1031 exchange a higher land value can certainly be a huge tax mitigator!