MMB and EF are correct, your in 22A which is a seat. Your on an A321ceo which have been densified.
Totally ignore SeatGuru as a reference as there are many seat maps well out of date there.
See this helpful post linked in the Wiki by CWS which has photos of 23 and 24 to give you an idea.
https://www.flyertalk.com/forum/30459828-post76.html