I had that cabin last year and liked it a lot!
It was very spacious
There was only 1 night we felt a lot of movement, but it was very rough seas, so I think any cabin would have felt it!
The connecting door didnt bother me, it is kept locked, and I never heard any noise from that cabin. (I believe it is a solo cabin, so it's not like you will not have a family with small children making noise!)
My only negative was that there was no couch