Where to stay in Sydney for 6 months ... beaches prefered :)

Hi Everyone

We are moving to Sydney for the most of this year as I have a job in
the CBD from June onwards.
We'd love to find a place somewhere near/on a beach within 30-60 mins
away (by bus, train etc).

There are soooo many places from Mona Vale to down south, within the
30-60 mins bus range (according to the CityRail Trip planner). We are
looking for somewhere quiet and not too expensive (who isn't ).

Can anyone help us out for our first Ozzy experience and let us know
what beaches or bays are nice to stay at for an extended period? We
really don't mind what sort of accommodation (house/flat/bungalow) as
long as the price is not over the top ... ie less than $500 AUD /
week.

Thanks for any help!!

btw we love scuba diving ... so any tips on that are welcome too

- feed_my_head
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