If the monsters do not drop anything of interest, Diablo himself surely will D2R Ladder Items. It's good to know that Diablo isn't that difficult of to kill. Diablo's attacks are easy avoid and even a budget Bonemancer build is able to handle Diablo.
city Of The Damned (Act 4)The creatures in the City of the Damned are among the easiest of the entire late game to kill. They rely on elemental and poison immunity, which is why a Sorceress or Poison Nova Necromancer could want to stay clear of these, but physical damage dealers cut through these crowds like butter.
If you are a player who needs to reach their maximum level the game may slow to a crawl. It is worth attempting to farm this area. There's likely to be runes and equipment to acquire that could be helpful however, the gain of experience in this area has no rival.
Nilathak's Temple a.k.a. Pindle Run (Act 5)In Act 5, players don't need to trek in Mount Arreat to get a ideal farming spot. This city in Harrogath already has one of most visited grinding places to be found in Buy D2R Items. Nilathak's Temple is where to be where players don't have to make the entire zone clear.