We were in 9200 which is on the back of the ship with a large balcony. The views are spectacular and it is a quiet location. This is an amazing place to be since the views are the best from this location. Especially for the last day when you pass by NePali. We did not pass by the lava flow since the weather was wet and foggy.
Comparing this room to the rooms on Carnival and Disney, this room was smaller but very comfortable for two adults. I don't see how three people would fit but they do state the room can sleep 3. The bathroom shower seems small but after taking showers it is larger than expected. The bathroom has no US Plug but some type of international plug in the ceiling above the sink. We were looking for a plug for a night light.
Take a power strip with you on the cruise so that you can plug in all your electronics. Phones, Laptops, Battery charges for cameras. There are not that many plugs in the room.