I suggest you check out the strata managers for well-run strata buildings in your area. Go for a walk around your suburb, and note the addresses of other similar apartment buildings, that appear to be well maintained.
Find out the strata plan numbers for those buildings. The NSW government has a mapping database that will provide this information at:-
https://portal.spatial.nsw.gov.au/portal/apps/webappviewer/index.html?
You can zoom in, using the address function, and click on strata buildings to display their strata numbers.
Use the NSW government’s strata search at https://www.nsw.gov.au/housing-and-construction/strata/strata-search
Put in the strata plan number, and you can see their strata manager. Make a list of the local managers, and go and talk with them. But ask each strata manager about their ownership – many “independent” strata management companies are owned by big conglomerates. That isn’t necessarily a negative, but you should be aware of this information, when making a decision – do you want a small personalised strata company, or a large one?