A great apartment. A good size for two people. Very comfortable bed, pillows and quilt. Well appointed kitchen and we really appreciated the extras such as English muffins, butter, jam, milk and fruit juice.
As some have mentioned, it could be tricky getting into and out of the shower if you had any mobility issues. You have to climb into the bath and there is nothing specific to hold on to. Also note that you have two (shortish) flights of stairs to get to the apartment.
That being said my husband and I are in our mid 60s and managed just fine. We also got plenty of exercise walking down into town. Mostly we caught an Uber back up. We would recommend it as a good base to explore Wellington.