Personally, I liked the Old Sewers, in the part that led up to meeting the Nosferatu, Gary. This was partially because I hadn't experienced any bugs at this point, or identified any glitches, and so the game still held a more significant challenge. (Alright, it was because I hadn't wrecked my character by wasting points on upping their lockpick skill
But the old sewers were great. At first, the prospect of one of the Tzimizce's creations leaping out of the darkness to pursue my character was spine-chilling. It was fun to blast them apart with the shot-gun, and then see that their body parts actually floated on top of the water... And the log of the sewer worker from the early 20th Century was an effective device for enriching the atmosphere. The music lent a lot to the general "feel" of walking through dark and seemingly empty tunnels, and the distant snarls of the monsters freaked the hell out of me!
After that, to meet the Nosferatu was the icing on the cake! And Gary had quite a speech for a Toreador with 4 points on appearance.
What do you all think?