Absolutely nice plane I must say. The cabin is nicely bright because of the big windows and higher hanging bins and on all seats there is good space for a short-hauler. The armrests are actually a bit narrow, which is probably to widen the seat itself. The screens (one in every row) are very small (almost like a smartphone only), which I did not like too much. But I would say there are no major drawback.
Just as a remark on the HON event: It was much nicer than the 777/E-Lounge event since the press (and especially the "bloggers") was invited to a separate event and thus there were not the awkward "hey see I am in the looouuungee" video calls to their friends. All in all it was a very nice event.