You can guess what kind of commission % was deducted from the sales disposition proceeds.

. $50 per bedroom, so a 4-bedroom house will cost you about $150~200consumables - bathroom supplies, kitchen supplies, beverage supplies: $20~30 per week, depending on how much you providewear and tear - towels, linen, kitchen utensils, some furniture: $1000~2000 per yearRepairs/replacement for things that guests break or steal:  $1000~2000 per yearAlso, if your personal use is less than 14 days a year, the entire property's expense is deductible against STR income, but if you use more than 14 days, then you will have to calculate the proportion of how many days it's rented out vs how many days you or your family uses. 

Most likely your insurance deductible will be more than that and an attorney will definitely cost you more than that.

Once you increase your real estate portfolio using these tax free money, part of the cash flow they generate is offset by the non cash deduction (ie depreciation) so you get the equivalent to the depreciation amount but don't pay taxes on it.

Also why are you deducting 50% for expenses? 

A little cashflow, some tax deductions to kick down the road, long term appreciation and loan paydown.

Keep in mind you will probably have a deductable to pay first.

Even if they had renters insurance, it comes with a $500 - $1,000 deductible just like your insurance.

Just quick math Adsense for 10,000 visitors gets you around $450-500/mo. 10,000 visitors takes good content and some healthy traffic generation.You'd have to pay someone to do that so deduct that from your net income.

So you are able to get the cash flow, tax deductions, etc.