Only time I have ever stayed in Ealing it was at a public campsite not far off Wormwood Scrubs jail. Load of old brick buildings and tattered marquee tents. Probably some sort of disused army base. It was like a United Nations refugee camp, with fights breaking out and what not. Didn't see any of the upper classes.
Probably there are a few inside the jail itself.
In Ealing, of course. There are quite a few big houses around.
Hampstead
Kew and Richmond
in hotels