I flew in this seat (42H) on the outbound SIN-JFK sector. These solo seats (last 3 rows on both sides of the aisle) are the best PEY seats onboard. I would recommend grabbing them if available, as they tend to get booked fast (even at the extra charge).
Some pics:







Recline is the same as the other solo seats,




On the SIN-JFK sector, the toilets were not heavily used, and I was not bothered by any toilet noises (YMMV).

I highly recommend these solo seats -- grab them if you can!

Hope this helps!