I need help on the quest for Act 2 in Soma Bringer.

I'm trying to find the Chimera Heart for Gestopft, and I've been searching the entire place, what floor can I find the heart on, so I can be sure to check again?

I'm stuck in the same spot . I was just wondering if u worked it out or anything.thanks

To any lost souls who come here in the future.
Its in isolation U 1 via 8 or 9 just before you go down to the area for the people to enter in the codes. Sorry I can't be more specific. Lost my notes I had done.