Ok, thanks...a ride it is :)

Hi
I occasionally ride my bicycle out to Narangba Heights and Ridgeview to map any newly completed roads. I see you are mapping in the area and wondering if you could tell me if there are any newly completed roads to map yet.

If the two garden areas differ in characteristics and you prefer they be two polygons then map separately and get rid of the multipolygon

Hi
outer rings of valid multipolygons cannot touch
https://tools.geofabrik.de/osmi/?view=areas&lon=152.97940&lat=-27.41644&zoom=19
I don't understand why you mapped it in two pieces. It seems to me that a simple polygon combining both areas would map it correctly.

I expect the operator is Programmed Facility Management
https://programmed.com.au/success-story/rottnest-island-wa/

Yes, I admit defeat in the attempt to fix osmi and Josm validator errors in the area. Almost every way that joins another use area has duplicated ways. There appears to be no attempt to use relations to reduce duplicated ways.
As I dug myself deeper in to the mire, I ended up with close to a 100 conflicts to fix. Eventually I have to cut my losses and run.
I was intending to return to the area and remap everything after having a rest day.
I expect you want the area to remain untouched by me so I have reverted the changeset and resolved the resulting conflicts in favour of others.
Thanks for helping sort this out.
I will let you guys look after this area.

Hi, you appear to have deleted a large building adjacent Francis Street. This building is still visible on satellite imagery.

Hi, you appear to have deleted a large building se of the junction of Sandwych and Adams Streets. This building is still visible on satellite imagery.

...also, there is no need to name a footpath as names are not used as a description. Only name things that have a name like a road (Clemantis Avenue) or a park (Pioneer Park)

Hi CosmicXXX1
the footway has already been mapped along Clematis Avenue so your edit has duplicated it.

Hi CosmicXXX1
I removed the park from the residential housing blocks.

I added name The Letter A as place=locality in Changeset: 140115945
https://nrenner.github.io/achavi/?changeset=140115945

Also added name The Letter A as place=locality at the junction of George Downes Drive and Walkers Ridge Road.

Hi
I am not very familiar with mapping buildings. The osm inspector (areas) picked up the problems because you used a multipolygon relation which appears ok now .
I expect that an easier way to map complex buildings is to use a type=building instead of type=multipolygon. I think the way to construct the various parts of the building allows for overlapping ways. You need one way encompassing the whole building and then all the parts fit inside, each with their own individual tags. All of these polygons, including the encompassing one and any holes (inner) go in as members of the relation.
I have not made myself familiar with building relations so I could be a bit mistaken.
But I think using multipolygon relations for mapping complex buildings is fine too.
I guess each is done with a differing method.
Which method you use is probably just a personal preference I guess and one may be more suitable certain types of building.

osm.wiki/Relation:multipolygon

Hi
Multipolygons cannot be constructed as you have done.
https://tools.geofabrik.de/osmi/?view=areas&lon=152.88689&lat=-27.37132&zoom=19
You need to read up on multipolygon relation validity.

Should the name be PhotoGear instead as is depicted on the web page?

Found very recent comment on Massage Therapies Enishi so have put them back. Now think the estate agent, Power and Henderson have gone. Unit number seem ok too, so will leave at that.

I found another business, the Makaveli Italian restaurant, to claim unit 2, so Waves & Fades must occupy the next space which was the Enishi massage parlour, https://www.enishi.com.au
The website for Enishi seems out of date so I have removed them.

I have used the websites of the businesses beneath Glen Towers to map them (from afar).
I have assumed Waves & Fades hairdresser has taken the spot previously occupied by the TAQIZA restaurant which has moved to Hall St.
The unit numbers don't appear in expected order but I have used the info on their web sites.