Well I did this flight two weeks ago and we had 4 A and B.
To be honest all the seats looked OK. The only problem with 4A and B is that they are next to the galley and the staff (lovely as they were) were really noisy so I didnt get any sleep. After lights were turned down they were laying trays or something and talking loudly. They were slamming cupboard doors with such force that my seat and the partition to the galley were shaking!
I know they were'nt but it sounded just like someone washing up and banging china and cutlery on the drainer!!!
I thought perhaps they were laying up breakfast trays but it went for so long and there were not that many in CW!