Duplex (one side only) deal in Mundelein, IL

Hello - I am curious to hear your feedback on this deal. I have property management and investment experience through my family but this would be my first own deal.

Left side of a duplex in Mundelein, IL. 

Asking: $209,000

Rent estimate: $1600 month / $19,200 annually 

Property Tax is rather high with $6000 annually 

Cash Flow after property tax / insurance before maintenance/repair is $12,000 at zero vacancy and $9,000 at 10 months annual vacancy. 

In my simple way of looking at it I'm at 6.4% or 4.7% return on capital. 

Looking forward to hearing input from more experienced peers. 

Also, if anyone has opinion if IL in general is a landlord friendly state, I'd appreciate that too.