Recently, my tenants have expressed concerns of people hanging out in the front of their units, creating some uneasiness - to the point where they want to exit their lease for safety reasons.

They look for basic health and safety issues, and the Section 8 office has a phamphlet with their requirements. 

Hi Paul,Charlotte is considered a good market for house hacking due to its demographics, safety, and quality of life.

There are many buildings with systems reaching the end of their life - Galvanized hot water risers, leaking vent stacks, aging window systems, outdated elevator and fire safety equipment.

The tenant threatens to get lawyers, my concern is their safety, but I can’t get any justification to make improvements to the property for security.

Home inspectors look for safety.  

•Safety and Growth: McAllen, for instance, has been ranked among the top 5 safest cities in the U.S. since 2020.

Lastly, I don't know what your long term plans are, but having a house to return to in the States if your international adventures don't work as planned can be a good safety net for you!

I would also say that markets like Manhattan are not super representative of most markets in the US - a lot of foreign investment I'd imagine in NYC, Miami etc - I'd guess a lot of these cash purchases are more about exchanging unstable or risky foreign assets/currencies for perceived stability/safety of US top metro residential real estateI think in a lot of other markets where this isn't relevant - I think most are cash offers being "king" as not having appraisal or other contingencies that might sabotage the sale after 30 days or so and make people re-list (sellers will take less to avoid this risk and downside)

It also took me down the rabbit hole of the safety of escrow deposits which seems quite frightening.