When are you flying this flight? Delta will have 3 different 777 configurations in service from March 24, and this seat will vary depending on which aircraft you are on.
On ships 7001 and 7003-7007 the seat is a bulkhead window seat right behind the lav.
On ship 7002, the seat is a regular window seat.
On ship 7008, the seat is also a regular window seat.