Have you seen the detection devices that provide remote notification:  https://www.amazon.com/smart-water-leak-detector/s?

This may open you up to Self-Employment tax on all of your Self Storage income. 

I keep a few toilet seats in the storage for just such an emergency.

Nor can your rental agreement state that the landlord can remove the tenant's belongings and put them on the curb or in a storage facility.If a tenant refuses to leave your property, the only legal way to have them removed is to file an eviction action against them, obtain a judgment of eviction, and if necessary involve the Sheriff's Department to physically remove the tenant.

Curious about RV and boat storage as an investment strategy.

If it's flipping, wholesaling, single family, STR or self-storage surround yourself with local people doing that thing at a high level.

If you have storage space, you can find some really nice stuff for zero or low dollars to have ready to go just in case.

In Boston, you probably couldn't even buy a storage space for that money.

It also has a double car port and a storage shed of the same size.

Apparently food is a really big deal to younger generations, I'm not sure they know stoves are for cooking not gadget storage, lol.