We did a quick Bloodwrought Enclave run yesterday and as we checked the mini-bosses for new loot i was able to create a complete map from Enclave, maybe it helps the orientation for starters. The dungeon is for six rank 40 characters and is located in the far SE of the Inevitable City. It's pretty straight forward as well and when you have a good group and know the dungeon you can just completely ignore the right wing, speeding up the dungeon a lot. It's the easier of the two city dungeons and you can get away with less wards on gear.
There are two (main) bosses inside the dungeon:
Korthuk the Raging (Sentinel boots & belt)
Barakus the Godslayer (Sentinel helmet & belt)
Since Patch 1.1a all mini bosses inside the city dungeons can drop the belt (now BoE) as well.
Bloodwrought Enclave MAP v1.0