This is the brief description of Golden Princess' minisuite, from the Princess website:
"Twin beds that make up into a queen-size bed. Separate sitting area with sofa bed and desk. Balcony. Two televisions. Refrigerator. Walk-in closet. Bath with tub and shower. Approximately 323 square feet, including balcony."
We were on the same ship a month ago, in an outside w/ balcony, not as big as a minisuite, and had plenty of room and storage space - more than we needed for two people! No tub in our bathroom, but the shower stall was plenty large. Watch for the European-style controls in your tub/shower; they're not too hard to figure out, but may take a minute or two, as they are not familiar to us in the U.S. The hot water was plentiful and the preset temperature in our shower was just right, in my opinion. We got soap, shampoo and conditioner, and hand lotion for bathroom amenities. There was a place in the bathroom to plug in a razor or nightlight or whatever else you might need in there. A rather wimpy hair dryer was in the cabin itself, by the desk. I used it because I didn't want to unpack my own (rather wimpy) travel hair dryer!
Have a wonderful cruise! She's a lovely ship.