"On her death in 1922, the Jewish Adèle von Rothschild bequeathed the property to the French government fine arts administration rather than to her only child, Hélène de Rothschild, whom she had disinherited for marrying a Roman Catholic.
The hotel was the site of a presidential assassination on 6 May 1932. French President Paul Doumer was at a book fair in the hotel when a mentally unstable Russian émigré, Paul Gorguloff, opened fire at him. Doumer died the following morning."
https://www.sortiraparis.com/news/christmas/articles/265394-exceptional-party-at-the-hotel-particulier-salomon-de-rothschild-for-new-year-s-eve-2023/lang/en
https://www.soiree31decembre.fr/soirees/reveillon-hotel-particulier-salomon-de-rothschild%2C74.html
Perhaps it is every year, but I found also this:
"On her death in 1922, the Jewish Adèle von Rothschild bequeathed the property to the French government fine arts administration rather than to her only child, Hélène de Rothschild, whom she had disinherited for marrying a Roman Catholic.
The hotel was the site of a presidential assassination on 6 May 1932. French President Paul Doumer was at a book fair in the hotel when a mentally unstable Russian émigré, Paul Gorguloff, opened fire at him. Doumer died the following morning."
https://en.wikipedia.org/wiki/H%C3%B4tel_Salomon_de_Rothschild