Suitable areas and cost of living in Nelspruit

I am moving to SA in a few weeks time and whilst I have temporary accomodation, it is very expensive (3500R per week). So I will need to find somewhere nearby. Nelspruit is the closest town, is this a safe city? Which areas in Nelspruit could be recommended as safe and nice areas? What sort of cost would I be looking at? Thanks for your help!