Also, after a year, the mortgage hasn't been paid down by much, especially if it's a 30 year mortgage.The only challenge you may run into is if you purchased it using a low or no money down mortgage option like FHA or VA lending.

I don't have a lot to offer as far as money or experience goes but I do have time available to do things.

It is clear from the interview that their main skill set is raising money and they partner with other "Co-GPs" who focus on the operations. 

We are considering stepping in and trying to buy the place, but looking for some guidance on STR and what kind of money this place can bring in. 

This is true for all private money lending situations..

The faster you pick it up, the faster money will roll in.

These programs offer options for less money down and in some cases DPA - Down payment assistance.As a banker for over 18+ years I am very skeptical when I hear a new name in the business only because its become tougher to lend with all of the new laws and credit/insurance requirements and regulations.  

Once I'm able to retire and remodel full time, I'm eager to make great money.   

Should i sell my business to get this money?

You have one STR, and you want someone to bring all of the money for your second?