Hi Helena,
 I use the realestate.com.au website too, for a lot of analysis of rents and prices. A point to keep in mind, if you have just purchased the unit, there are restrictions on what you can deduct in the first year. Worth looking into, depending on what sort of fixing up you are planning. Depending how many properites you have and how hectic your life is, you can talk down the management rates with the Real estate folk. They are fantastic to do all the legwork for getting in tenants and checking and they know all the tribunal ins and outs. It also means that there are no  middle of the night calls on your mobile! Check around to find out who the good ones are, because the bad ones are ****!!!!
Also busy working full time mum doing alright with the property side of things

Carey