Investment Properties That Aren't

We return once again to De Waterkant. Here's a one bedroomed loft apartment for sale for R1 400 000. It's described as a "a fantastic investment opportunity". That's got to mean a yield of like 20% a year right? Well here's a one bedroomed loft in De Waterkant for rent for R4500 a month. In fact from the description and the fact that the same agency posted both listings it sounds like it's in the same block. So how fantastic of an investment is it?

Down Payment	Monthly Cash Flow	ROI
R100000	R-8918	-107%
R300000	R-6854	-27%
R500000	R-4790	-11%
R700000	R-2725	-5%
R900000	R-661	-1%
R1100000	R1403	2%
R1300000	R3468	3%

3% yield with close to a 100% deposit? Fantastic indeed.