Hey guys, this is a method I use to farm resplendent chest in act 1:
1. Use the waypoint to "Northern highlands"
2. The watchtower will always be on the left site and very close the waypoint. It is not always there. The spawnrate is around ~50%. But since you are very close to the spawnpoint, you can pretty fast make a new game if its not there:
3. The watchtower level 1 is very small, you will find the second level very fast on all possible maps
4. The second level is small as well, you will have no problems to find the chest fast
5. Loot your chest:
Additional:
The way to the tower and the tower itself are full of yellow and blue mobs. By the time you reach the resplendent chest, you will have 3-5 nephalem stacks
Happy farming