Hi Wonder
I just had a quick look on wotif & two I came across are:
Sefara's Park Suites & Convention Centre - this is close to Golden Grove I have only ever been here for formal dinners so can't comment on accommodation but got rated 4.2 out of 5 on wotif
Mawson Lakes Hotel - about 15 mins away, rated 4.3 out of 5. Again I haven't stayed there.
Both are located near shopping centres, with Sfera next to a Westfield & o-Bahn (bus on tracks) transport into the city.
I should be heading up to my in laws on the weekend who live next to Sfera & keep an eye out. Funny even though I grew up in the area never had to look for accommodation so had to think about it.