Best Location to Diablo 4 Items Farm Baneful Hearts: Gea Kul (Kehjistan)
Community consensus favors Gea Kul in Kehjistan as the top farming spot due to:

Two major world events spawning close to each other, enabling fast loops.

High density of Hellborne, Harbingers, and Commander events.

Efficient threat meter building, spawning more Harbingers rapidly.

Open map design helps track events and enemies easily.

Key events to farm here:

Tornado event surrounded by cultists — fast and intense combat.

Summoning circle with portal cultists — spawns multiple enemies rapidly.

Note: Gea Kul is only available during the Helltide rotation in Kehjistan — keep an eye on the schedule.

Additional Tips for Baneful Heart Farming Success
Play with a group: Farming in parties increases efficiency and event completion speed.

Optimize movement: Gear and skills that boost mobility help you rotate between events faster.

Use loot filters: Filter out unnecessary items to reduce loot pickup downtime.

Monitor Helltide timers: Time your sessions to be fully active during Helltide windows.

Balance offense and defense: Helltide zones are dangerous; ensure your build can survive multiple event waves.

Final Thoughts
Baneful Hearts are essential for engaging with Diablo 4 Season 9’s Helltide content and the Blood Maiden boss. Farming them efficiently means mastering a cycle of killing Helltide mobs, completing events, summoning and defeating bosses, and opening Tortured Gifts.

With the right strategy, especially focusing on events like Commander fights and Harbingers, combined with farming in ideal locations like Gea Kul, you can build a steady stockpile of Baneful Hearts. This will fuel your progression in the new Boss Ladder system and improve your chances of acquiring the best gear and crafting materials the season has to offer.

Stay patient, plan your runs carefully, and buy Diablo 4 Items happy hunting!