What if they break-up and the primary tenant decides to leave, does it mean that the sub-tenant must vacate as well?

@Adam Czajkowski nice work on breaking into the STR space!

That would be double dipping.I think the bigger concern would be the management company's lack of transparency in breaking down the revenue/expenses, and whether that means they are possibly rent shifting (offering lower nightly rates that they rev split with you and shifting the cost into various administrative fees that they keep 100% of).IE instead of$500nt x 4 nights = $2000, they take 16% of $2000 so you get $1680They might be doing something like (and this is typical of PM companies trying to squeeze out an extra buck)...$400nt x 4 nights = $1600+$400 in "administrative fees" = $2000.You get 84% of $1600 = $1344Same rent cost for the customer but now they are only paying you 84% on $1600 instead of $2000, and then pocketing the entire $400 "administrative fee".

It's the number 1 thing that breaks on fridges. 

Some tenants in my experience don't care and if they are offered money to move they will be packed by the end of the day and others were not wanting to move because they have a routine that they don't want to break. 

You would be looking at needing a PM for this property, which will take out another chunk of change in your cash flow, so you may be finding yourself breaking even in terms of that after all expenses.Without knowing the exact property I can only give so much advice, as there may be repurposing opportunities with the property which could create stronger cash flow.

And I think break-even point is the best  possible scenario.

Your entire package comes with a 30-day 100% money-back guarantee.Incidentally, your guarantee is void the second you break the seal on the package they put in your hand after you sign your credit card authorization and contractual agreement with the fine print.I went to one of those snake oil shows where in the first ten minutes of his presentation the promoter told the members that the course was something like $50,000, but the first 10 buyers could have the course for only $8,000.

If you connect with me I will share an in depth excel worksheet with you that breaks down EVERYTHING.

If you think he's breaking in, he's harassing the workers, you need to do something.