The thing is I know that the owner died and the children out of state are the ones selling it(I spoke to the neighbors), so I know that the children will just sell it to someone else.

Who cares if someone smokes pot. 

I would advise you not to waste your money on paying someone for coaching.

If you are looking for someone to mentor, please reach out to me!

It has worked great for us doing it this way And we get group bookings for large families all the time this way.sounds like trouble trying to do that in one actual listing for calendar coordination but maybe someone will have some great ideas.

As someone who works with plenty of investors the demand for small multifamily 2-4 units greatly outshines the supply.

I don't think a property management company is going to pay someone with no experience and has only read books to help "improve their efficiency". 

(Someone to receive notices on your behalf)Residential income properties need a Transaction Privilege license in most locations (Rental Tax)Property Management is a specialty in the industry and it's very possible your sister has her license with a broker that doesn't allow her to do property management?

Just like in 2021, or so, every other instagram ad I was seeing was someone selling their crypto trading scheme.  

STRs require a lot more cash up front so you just want to make sure you have a good idea of what you're getting into first :) I own STRs and love it but I also wish I had learned a little more about the analysis and management prior to going live - I did some of that on the back end and could have been successful faster.Another idea is to talk with some owners 1:1 to see what advice they would have for someone starting out.