In 1632, prince Władysław gave the palace to his favourite, Adam Kazanowski; this caused a serious misunderstanding with the King, and a special Sejm committee was appointed to determine the circumstances behind this gesture.

Le Laboureur was amazed by what he saw inside—a large statue of Bacchus made of pure silver sitting on a barrel with wheels (that served as a wine vessel during banquets), gilded wooden ceilings in the Venetian style, rooms filled with oil paintings, marble decorations, Flemish and oriental tapestries, oriental objects, furniture from Italy and Bavaria, silverware, a live bear inside a gilded cage in the courtyard, caged monkeys[2] and a large collection of musical instruments belonging to Crown Court Marshal Kazanowski's private orchestra.

[3]His patron Madame de Guébriand noted "the rooms [were] decorated with various cupboards of the most exquisite workmanship, and tables with the most beautiful objects in gold, silver and amber".

[4] Kazanowski also arranged a cabinet of curiosities (Wunderkammer) in his palace that contained a large stuffed snake from Africa hanging from the ceiling, and an Indian sea turtle.

[5] The palace also had a terrace garden on the escarp side, and was notably famous not only because of its decadent furnishings, but also due to central heating and plumbing installed inside.