An INVESTOR does not repair appliances, does not unclog toilets, does not paint walls, clean units, OWNER OPERATORS do those things, Business Owners/Operators do those things, NOT INVESTORS. 

His were cheap to buy, easy to clean and are booked continuously, he has the HOA to contend with.  

i always thought that japanese make great tenants, respectful, clean, pay on time.

Also, does anyone use/have feedback on local Airbnb cleaning services?

A condition of the cash for keys should be that they don't leave behind dumpsters full of things.To me broom swept meant 100% free of belongings and actually cleaned albeit not deeply.

As @Charles Carillo said, you can make the most of that time, but most people just waste the 4-5 years and then end up doing something unrelated to their degree field anyway.Maybe look into a Trade School, like an electrical one....nice clean work that pays really well.

Since they are nearby, they would have local housekeeping and handyman contacts for cleaning and emergencies.

The neighbor is outside cleaning up his yard minding his own business.

I'm a landlord of a 3 unit building and a regular check on it and clean the hallways lately.

Get electrical connected (electrician)4) Do any cleaning , painting , etc needed to get it rent ready4) Get a tenant!