At EK...
330 - No crew rest, just curtained seats
340-300 - No crew rest. just curtained seats
340-500 - Crew rest, in bunks, below the cabin (8 bunks for 15 crew)
777-300 - No crew rest. just curtained seats
777-300ULR - Crew rest, in bunks, above the cabin (10 bunks for 18 crew)
777-200 - No crew rest. just curtained seats
777-200ULR - Crew rest, in bunks, above the cabin (8 bunks for 16 crew)
380-800 - Crew rest in bunks at the back of the economy cabin on the main deck (9 bunks for 26 crew)
On all aircraft the flight crew rest is in the same are as the cabin crew, but separated.
Crew rest is on a flight over 9hrs45mins.... anything below that no rest is required!