I loved the location of our cabin. Decks 6, 7, and 8 are where most things are located and we rarely took the elevator unless we were going to the garden café, which we did not go during peak times. Did not have an issue with the elevators except the last day. Had the mini-ste which is much wider than Epic's but the balcony was almost too long as could not see the ocean from bed because the side walls were so deep. Not a far walk across the ship that I noticed, as I tend to be directionally challenged, so saw more than I planned on.
Loved our B6 cabin the balcony was huge and we even had a lounge chair. It's in the front of the boat so if motion bothers you might not want this category. Cabins are narrow and a little tight but the bathroom was nice and modern.
We booked last minute with a GTY Inside and ended up in the BB category Mid-Ship Balcony. I thought the room was perfect size. I had a large balcony on the EPIC 2 months earlier and thought this cabin was way more spacious and I liked the bathroom better as it was one contained unit. The balcony is small though - just enough for a couple chairs and a small table. This room has the couch by the balcony doors which I thought worked out perfect. You have decent room between the couch and the counter area.