No to very little crime no worries with water or food borne illness's  etc etc.  

For example, Yunta in South End is a must-try Peruvian spot with amazing food and a great atmosphere.

Maturana, and I am the founder of RAPT Hospitality, a craft catering and event management company serving New York City, Miami, and Amsterdam.As I delve deeper into the real estate world, I’m eager to explore various investment strategies, including house hacking, the BRRRR method, rental properties, creative hospitality ventures, triple net investments, vacation rentals, syndications, and joint ventures.

Remember that now, mid-term rentals cater to much more than travel nurses and hospital personnel.

We have our Guide Book on the counter in the kitchen.People like to have something to look through, plus other guests leave flyers from places where they ate etc. with notes like, "Great food" etc. written on them. 

Two weeks later I stopped by the unit (was passing by and decided to take a look) and found that someone was using the shower and leaving food and clothes in the house with visible intent to return.

Without a financial education - it's hard for him to discern which.What he should NOT do is to buy toys or spend it on fun because it'll quickly be gone.If he was financially savvy or versed in real estate - he could even buy a small apartment complex and self manage it if he had some property management skills.Advice should be catered to him specifically though, blanket advice isn't that helpful.

You might also consider lenders like Velocity Mortgage or LendingOne, which cater to real estate investors.

Maybe it might be different in your market, but at least here in CA, no real estate agent is going to refer  a client slow poke big bank unless it’s specialized bank offering a specific program that caters to the needs to the borrower.  

You could lease part for food service or coffee shop and some retail space, a small health club, massage.