Hi seakat, welcome to Cruise-Chat. Sounds like you're off for a fantastic adventure. We've had an inside with a pull down bed and with a couch that became a bed. I assume yours will be with the pull down one. The room stewards will pull them down when preparing the room for the night and will put them back up in the morning, after you've left the cabin. If it's the one with the couch, they'll make you bed up at night and put it back into the couch configuration in the morning.
Here is a link to their website. There is a 360 degree virtual tour available, as well as a picture of the interior cabin. Hope you have a wonderful voyage, and once again, welcome aboard!