It also included an attached garage, men's and ladies' hair salons, an extensive wine cellar and a laundry on-site.

The hotel was expanded in 1924, with a new wing that included a dancehall where Rolf Roy, a well-known Viennese dancer, was appointed as its artistic manager.

In 1925, a ball of dramatists and playwrights was held at the hotel, attended by such artists as Jan Lechoń, Stefan Żeromski, Ludwik Solski, Kornel Makuszyński, Maria Pawlikowska, Józef Węgrzyn and Tadeusz Boy-Żeleński.

King Amanullah Khan of Afghanistan visited the hotel in 1929, when officials of the Second Republic of Poland honored him with the Order of the White Eagle.

The hotel became a favorite spot for meetings and the accommodation of diplomats and aristocrats, who would celebrate winter and ‘green’ carnivals there.

General Dwight David Eisenhower stayed at the hotel in 1945 for a victory banquet, greeted by huge crowds of cheering Varsovians.

The hotel hosted congresses of technicians, steelworkers, and unions, and events like the a book fair.

Its guests included representatives from the national football team like Zbigniew Boniek, Grzegorz Lato and Jan Tomaszewski and popular artists and bands like ‘Skaldowie’, ‘Czerwone Gitary’ and Poznańskie Słowiki.