There are two cells. The first, a large holding area with many (apparently political) prisoners, and the second, a more private cell, where the Professor is initially locked up. There is also a secure area where prisoner effects are kept during their period of incarceration. This is where Geralt can pick up his gear after his first excursion through the sewers. There is also a large central area where the jailers perform their duties, a grate in the middle of the floor leads to the sewers.