I've been in 52H several times. As long as you're ok with getting a cold meal, served about 1 hour later than the first rows, and being ok with SAS staff being rude, noisy and kicking your seatback when they take their break in the rows behind you then you should be ok. It's not very close to the lav.
Seats at the end of a bulk at SAS tend to recline as usual.
Do as I do: bring earplugs and an eye mask to avoid any rough awakenings caused by light or sound.