Schena Wab (Location)
A treasure location in Krokodilopolis, in the Faiyum Oasis.
Both treasures are just outside the small, central building.
Sneak over the wall, onto the roof. It's not compulsory to take out the roof guard, but it helps.
The only other guard to worry about is the heavy on the ground level, guarding the east of the building.
Either lure him away and double back, or just kill him. Loot the red chest from the porch and the small carbon crystal box from the the marble bench to complete the area.