1. If you plan to live in it, don't buy just because it is cheap

Still you have to consider location and neighborhood, how you feel inside. It is very personal.

2. If you want to buy for investment, make a study of the local rental market first. Do not start considering the offering price before you have done your homework. My feeling is that you are not quite there.

For 3+3 unit, assuming you can consistently rent for $2k, $180k is something I might consider marginally, but far from a good deal.