Agree. We did these flights last month to and from FRA with a 15 month old and a 4 year old. It was easier to help the children when sat adjacent to them rather than across the aisle. I found the seat width generous and the bed length fine, with no narrowing near one's feet. I think it's ideal for couples
Even better for solo pax on one seat with the adjacent one empty. Lots of space!! The 350XWB is really wide for 2-2-2 traditional Biz class seats.
I sat on a window seat, on both DOH-MUC and MUC-DOH back in APR with no one next to me. So much space, I even made the window seat stay flat at most of the time. Feel like LH 747-400 Upper deck F class lol