Pick the left hole. At the three-hole mechanism, choose the dialogue option "Left one it is..." Coen puts his hand in, the gate opens, and you keep moving. Middle and right poison you and reset the gate.

The note on the crate reads "Silver coin shimmers on the right,
Middle feels like a summer light,
Left reeks of blood and fear,
Choose wisely, or you will scream!"

1Why Left Is the Only Safe Pick

Right — Trap
"Silver coin shimmers"
Silver hurts vrakhiri. The pleasant-sounding option is the actual trap - it poisons you.
Middle — Trap
"Feels like a summer light"
Sunlight is just as deadly to vampires. Another bait option - poisoned.
Left — Safe
"Reeks of blood and fear"
Blood and fear are exactly what a cruel vampire like Bakir enjoys. The worst-sounding hole opens the gate.
Do not overthink it. The riddle is written to bait you into the "nice" options. Bakir likes pain - the hole that sounds like a trap is the one that matches him.

2Exact Steps at the Gate

3Decisions That Matter Around the Maze

Mistakes That Cost You the Run

If you are standing at the three holes right now: left. Wrong hole = poison and a gate reset. Correct hole = immediate progress.