Having flown DOH-OTP on the same equipment, I can say this:
- the seat is reasonably comfortable
- I'm not normally a big fan of screens that fold out of arm rests, I see that as a minus
- with few pax in J, service is attentive and efficient (YMMV, of course)
- it's okay to sleep on, but not nearly as good as lie flats
- the distance is reasonably short