Here is my quick analysis from a buy and hold standpoint using conventional financing, strictly looking at cash flow and cash on cash return. Lets assume you finance this using conventional financing with 20% down, and a 30 yr term. Your monthly mortgage payment would be approximately $500.
Since we don't know any details about this property aside from potential gross rent and asking price, we will estimate cash flow with the 50% rule.
We will assume the gross monthly rent is $1,150.
$1,150 / 2 = $575 less the $500 (mortgage payment) = $75 a month in cash flow.
That figure is low for most people and makes for an even worse COC (cash on cash) return. Assuming this property is turnkey and will need no repairs, you will have approximately 30k cash wrapped up in this with a 20% down payment and closing costs.
$75 cash flow a month * 12 months = $900 cash flow a year.
$900 /$30,000 = 3% cash on cash return.
There could be other aspects of this scenario that make it a good deal (i.e. priced significantly below market value), but for the most part it does not seem all that enticing to me, even with seller financing.