Hi there, ChikenMC.
Not sure about bugged ways anymore, I'm afraid. But if you wish to level manually, I've got a few good places.
First tier: Act 1. Broken blade part two(Talk to alaric). Get yourself into the Crypts of the Ancients. Once you enter you will be checkpointed. Clear out the crypt, and relog. And do the same over and over again. Works from lvl 1 - 18(Up to 20, but it gets lazy after 18).
Nightmare difficulty: 25->38(Goes till 40, but same story as normal difficulty).
Hell: 50-53
Second tier: Act 3. Quest 1. Do the first quest, and the beginning of the second quest. I use this from 18-25, and from 38-50.
Hell: Goes all the way up to 60.
Third tier: If you're playing a melee character, killing iskatu in Act 4, Q1 over and over again is insane. It took me 20 minutes from lvl 59-60.
All in all, it took me less 12 hours to get my monk from 1 to 60.