We booked a cheap inside cabin - and that's what we got. Our cabin was tiny - one of the smallest we have ever had, though functional for sleeping, showering, changing etc.Annoying features - the cabin door did not fully open, the bedside table was a single unit (so one side did not have a side table), and the water pressure and temperature was variable.We also lucked out and had a very noisy neighbour, resulting in a couple of calls to the pursers desk (we are very easy going, but loud TV at 3:00am is a little rich). Read entire member review.
Our inside stateroom on Plaza Deck (P329) was compact. Plenty of drawers and cupboard space for all our clothing and possessions. Cases fitted nicely under our bed making room more comfortable. Location was brilliant, close to the atrium, lift straight up to Horizon Court and Dining Rooms very handy too. No noise from the hallway.
Horrible small room but we don't spend any time in our room which is why we get a cheap interior. It was fine but the smallest interior we have experienced. Had to crawl into the bed from the end! One day will splurge on a balcony!