The seat itself feels a bit tighter than the old seat, which is good, because the old seat actually felt too wide, in my opinion. While the seat doesn’t feature a door and isn’t enclosed, it features a significant amount of privacy, which represents a big improvement over their old business class.
There’s one very big major huge issue with the seat — it’s hard as a rock. This is the same problem Singapore Airlines had with their old seat, and I can’t really wrap my head around why they didn’t change that. While the seat comes with a mattress pad, in reality it’s more of a sheet than anything. If the flight isn’t full I recommend requesting an extra duvet, and then sleeping on top of that.
The reason I say Singapore Airlines is using the same basic “bones” of the seat is because you still have to sleep at an angle. The area for your feet is in the far corner, so you sleep at a 30-45 degree angle. I don’t view this as a big deal, though it does eliminate a few potential sleeping positions. The good news is that in the past you had to get up in order to put the seat into bed more (as the seat essentially “flipped” over), though you no longer have to do that.