I was seated in 33K on two recent flights (Jul and Aug). I was lucky on the DXB-LHR as no one was seated next to me so I managed to spread along the two seats, resting my back and head on the storage compartment. The storage helps in itself as it's quite large so you can chuck all your stuff in it and have even more room.
On the way back, flying LHR-DXB, I wasn't as lucky as there was someone in my seat. They were pretty annoyed by the fact they had to change the seat and ranted on the phone for fifteen minutes until warned by the FA (this is pre-electronic-devices-are-okay). The two seats in the front were empty and I had my hopes up until two ladies with three kids stormed in at the last minute and turned the flight into 6 hours of screaming. I'm not going to go into details (and potentially annoy parents on the forum), but let's say I welcomed the whole row to myself on my next leg.
The cabin itself is nice, (usually) quiet and cosy, the toilets are just there and generally not busy, the FAs are right there and help out with anything needed (I got the biggest glass of Whisky ever), so I was generally very satisfied (more on the way to LHR, though).
All in all, I appreciate all the tips and I'd definitely try to get a seat upstairs next time as well...