This was cruise number 60++ for me and my 3rd time on the Maasdam.
The Maasdam while 16 years old is still a beautiful classic cruise liner. The staterooms are well laid out, appointed, and the beds and bedding/pillows are exceptionally comfortable. A few of the light switches don't make logical sense.. For some reason the switch designer decided to put a few "fake" switches that are purely decorational and non functional right next to the real switches...so you'll likely find yourself flipping a lot of buttons trying to find a particular light switch.
The bathroom is better than most ships although another small shelf or two would sure be welcome as there is but a single slim storage shelf that is overcrowded. There is also a powerful fixed hair dryer unit in the bathroom. The amenities are acceptable but the stewards don't seem to overdo it with replenishment. I had to ask for shampoo/ soap on several occasions. The towels are big, nice and plentiful.