Go Left

You slowly ease your way down the landing to the door on the left. Reaching the door you pause to listen at it. For a moment you hear nothing, but then the unmistakable sound of girlish giggles reach your ear. There is an indistinct murmur of voices, and then more giggles. Clearly there are at least two people in the room.

You take a deep breath, considering options. You could burst in and surprise whoever is inside, or open the door quietly, perhaps getting a better idea of what is going on. On the other hand, you're sure this door is the only way out of the room. You could simply wait for whoever it is to come out and deal with it then.