Hello IFC,
I was thinking back to when I was a young child, and I used to fly in between Europe and the U.S. quite often. One of the routes I flew a lot was from EDDM-KORD on Lufty and United (with the good old Battleship livery). Unfortunately I do not remember that well what type of aircraft I flew because I was only 4 yrs old or so, but one thing I remember was that there were bathrooms downstairs, which I always figured was a B744 then, because that is a double decker. After discussing with my non avGeek father (well he kinda is), he would always tell me that is was an A346, but I would always say a B744. Well, after some research, I have found out that it turns out the Lufty A346 has bathrooms downstairs!
I also heard that a few of Thomas Cook’s A330’s have the lavatories stationed in the lower deck. Pretty neat feature to help increase that seating capacity right?
Thomas cook A330 have also lavatories at the lower deck. But Lufthansa was the first to introduce it on the A340. Yes, it adds more seats but it doesn’t have lots of space in the corridors and in the lavatories on the A330. A340 is better and comfortable since it’s fuselage is a bit wider and corridors isn’t that cramp.