Perhaps fight is the wrong word, but can you counter a rent increase and argue that it's excessive by presenting your case to the property manager?
We just got notice of a $10/week increase, which doesn't seem a lot but it takes the price up beyond where we think the property is worth. The landlord does very little by way of repairs and maintenance and has still not addressed our leaking asbestos roof - it's leaking into the ceiling and you can see a damp patch of mould directly above our lounge.
I've looked at other properties in our area and we could get an extra bedroom and garage for what he wants us to pay. We're hoping to avoid a move because we're trying to save a deposit and buy in the next 6 months or so.
Worth a try or unlikely to get us anywhere?