Where is Set Lucatiel located? (Dark Souls 3)

Fruttik12 A
crow exchanged a mask for me for bone chains, it seems, the rest is not in the know.

Fruttik12
Spoiler of the location where, together with a knight from the covenant of the sun in "pot-bellied" armor (I don't remember the name), you fight a flaming demon, there is also a ring on the stamina regen

Faust_58 Even
if I went through half the game, I did not see a pot-bellied dude)

Fruttik12
well, what are you)) on the elevator, he rises and constantly like this: "Hmm-mm")) In the settlement of the undead. On this elevator you go down, where a nimble knight with frostbite is waiting for you, from which an ice sword falls.

Faust_58
I met him, but so simple talked to me and bb.

Fruttik12
if you want in a personal I will tell you how to get there so that others do not spoil the impression)

Faust_58
Ok