What level are you, it may be more prudent to return there later, if you are too low.
Follow the bodies and loot them for body parts too. You will be attacked a fair bit here. You will come to a little sort of balcony, jump to the platform, then to the balcony on the other side, again follow the bodies through a door.
When you come to the fire area, stay in the middle of the river and follow it (like in the cutscene).