The White Lotus filmed at Villa Tasca, Palermo. Quentin's palazzo, where Tanya is taken for the party. Two independent sources confirm Villa Tasca rather than Villa Elena.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Palermo and it tells you what was shot around you, how to get there, and whether you can actually go in.
Download Venture for iOS Android