Flew on the 321 Neo in first yesterday. Seat (5D, so last row of first) was fine, but the armrests were hard and uncomfortable. I liked that I could turn off the IFE but still see notifications like seatbelts required and the time until arrival. The safety video is really cheesy. After the recent fire in Denver where passengers ended way out on a wing without a great way down, I was happy to see that wing exits on this plane are equipped with slides.
The lavatory in front was pretty much the same as every lavatory I've been in for years other than needing to look around to find the flush button, which is located a little weirdly relative to the toilet.
Fab cabin crew in first on this flight.