The maps are indeed good. You didn't make any mention however of István's rooftop reconnaissance so I don't yet know where the enemies might be lurking (Listen +6, Spot +11). I don't know if he could have done it before initiative was rolled or not, but at his speed, István could easily survey all sides of the building in one round by starting at J3-7 and moving to H3-7 to H2-7 to E2-7 to E2-5 to H2-1 to A2-1 and finally to A2-4. If not, then that's what he'll do on his first turn, all while using the cover provided by the roof's eaves to remain hidden from people down on the ground (Hide +23, Move Silently +17, -5 penalty for moving at less than full speed, taking 10 on both skill checks). If he doesn't spot anyone skulking around outside, then on the following round he'll move down to the ground to scout out the entryway for enemies.