For a faucet, I would ask the PM to get a photo of the faucet for you or get the model name and look it up online.

Fannie and Freddie guidelines are available online to anyone so you really do t have to take lenders word, but For short term rental you need a two year history to average.They don’t treat it as a standard rental.

On line they will also have the current usage/zoning  for the subject.

On the side, I have been focusing on starting a business as a real estate copywriter and photographer.

Then go online and find that areas municipal code and start reading through it.

You do not have to sign a new lease.Establish a free google phone number and tie it to your LLC and ZelleHACC has a change of ownership form that you can download online.

Don't just rely on an online credit/background check!

(Yes) We could shop at a place 50 times and have one bad experience and then go give them a terrible tongue lashing online.

Does anyone have or recommend any calculators (online or excel) for seeing numbers on rentals, BRRRRs, short-term, etc?

Try doing it when mortgage rates are 6-8%, NOBODY you know or have ever talked to is doing is, there are no books in the library, no such thing as Bigger pockets, no Zillow, no online MLS, heck maybe no internet.