Looking for advice on 333 business class seating. Currently in 9K which I understand is missing a window, it's the only K available.

• Does that mean no window at all, or just one not ideally positioned - AeroLopa makes it look like there is in fact a window next to your head.
• Does the sidewall impinge on elbow room? I've found this to be the case on other aircraft where there's a missing window.
• It's a redeye US-Europe flight so I really just care about sleep. While maybe I can get a free throne if there's still one left closer to departure, the only other options are pair seats. I know to avoid A/B, so am I better off in a center pair vs. 9K?
• On the center pairs, commentary on the trade-off of larger footwell vs. less privacy in the seat directly on the aisle?