This was our second cruise on DCL - purely wanted to do the MV on Fantasy - we really weren't interested in the ports.
I travelled with my 65+ mother and we had an aft balcony on deck 10. Yes, the aft balconies are HUGE. Ours was in the centre of the ship. No the noise from upstair in Cabanas did not bother us - it really wasn't too loud and we're early risers. No, the noise from the connecting rooms was not an issue.
The ship is beautiful. The cast members were on the ball. This ship had so many shake-down cruises after the issues with Dream last year. This was a team that was switched on an enthusiastic to finally have real guests.
By far the largest of the aft cabins are in the 166 rooms - they are dead centre on the ship. No seeing from about is not an issue. You can only really see below if someone is standing on the balcony. Noise is not an issue from Cabanas or from connecting rooms. The connecting room for 10166 is 10164. All the balconies have connecting doors.
HUGE, HUGE, HUGE balcony space - sparse furniture which is a shame. Only 2 chairs and a table which looked lost.
Bed was comfy, pillows great. Clean, tidy, lots of storage space.