The Floating Prison | Paths and consequences - act 1 The Witcher 2 Choices Guide

An important consequence is that you helped Roche during a confrontation with Letho in the Elven ruins. If so - you can't do at this point your own plan (conduct Iorweth as a hostage) which will make a game slightly harder. At the end of mission you must decide whether to save prostitutes or go after Loredo. If you have not done the mission "Mystic River" yet, the choice is simple; otherwise you might consider the second option - save the elves, which will result in sex scene in the second act.