OH and I are booked on BA39 (LHR-Beijing Daxing) and BA38 (Beijing Daxing-LHR) next May. It's a B777-300, and the seat map is showing 56 J seats (rows 10 to 16). It's a while since I travelled in the CW dormitory and can't say I'm really looking forward to it. I've read/skimmed through this thread but can't find any specific reference to the 56J variant.

At the moment the entire cabin is wide open in each direction, with only the bassinet seats blocked. I've selected 10A and 10B, on the grounds that there'll be no-one climbing over us to get into and out of their seat, but am aware that they're close to the galley.

Does anyone have any recent experience of these seats? Are there any drawbacks that makes them a poor choice?