As you enter the Star House, you encounter the largest and most representative room - the Great Hall. It was rebuilt in the second half of the 16th century. The south-western part was built over to create a "hanging chamber", intended as a merchant's office. Traces of this can be seen on the ceiling in the form of various polychrome beams and a trace of a partition. Also noteworthy is the painting on the panels above the window on the left, depicting a couple in front of a landscape. It dates from the second half of the 16th century. At the end of the 17th century, Johann Georg Zöbner had a new spiral staircase built to replace the old one. On the first step, on the left, there is a statue of Minerva and, on the right, a statue of a lion with a shield bearing the date 1697.
This staircase is one of the most beautiful in Toruń. Its structural axis is an oak arbour with a spiral banister cut into it. In the second half of the 19th century, the chimney was replaced by a second spiral staircase, this time made of cast iron.