Your main concern should be whether these bedrooms and bathrooms on the lower level are legal and have the proper egress require for fire code and livability.

Seems like the township did not deemed the property a legal for unit property.

Said it great .Especially  A legal contractor has more to lose than a homeowner .

Document the condition they left it, keep receipts for the charges, and charge it to their card.

Holding properties in an LLC (or other legal entity) can offer valuable protection for your personal assets, so I understand why you went that route.

They aren't looking for 10% returns and they probably love the idea of getting some cash legally out of Canada.I got into Costa Rica because of the country (it's awesome), what's happening to real estate prices there and in the US (they are nuts here) and the amount of development that's happening around Potrero, the technology advancements in the STR industry, proximity to the beach etc.

Quote from @Frank Barletta: It is more cost-effective and practical to install a large-size TV and get the Nintendo, Super Nintendo, and Sega Mini consoles.It comes with games preloaded, legal, and each to swap in case something breaks. 

Be sure to review the legal documents, oral representations won't stand up in court.

So I guess thats legal.  

You don't have to file "Trust" documents in order to hold a tenant security deposit in trust.