Those rooms are smaller than the others. The only benefit is no walking and climbing stairs. If you're able bodied, get a larger room and better room in a less expensive category. Wish we didn't waste our money last April for our 2nd trip to CSS.
All rooms in these blocks (A and B) are the same category and same layout. The balconies are all the same, and rather small with just a table and two chairs. The views are better on higher floors, but the ground floor is nice for easy in/out from the beach, but is less private.
All the balconies are the same size, to me smallish, but adequate, but the bath does have a corner jacuzzi and separate stand up shower and is quite spacious with a double sink/vannity. I don't think that penthouse offers such a bath.