My husband (Bob - age 80) and I (age 78 and mobility impaired) have been on 14 previous cruises together and I've also been on six cruises with my grandchildren. We've been on most of the mass market lines (in alphabetical order Carnival, Celebrity, HAL, Princess, NCL and RCCL) We have also cruised on our own boat and rented a canal boat that we cruised on in England. This was a wonderful cruise which had a few problems. Only one of those problems was attributable to the cruise itself.
One problem was my expectation for the cruise. I thought we would be traveling along rivers and canals and through locks so that we could view the passing scenery from our cabin, and then we could get off in towns and cities and either take excursions or wander around on our own. Unfortunately most of the traveling was done at night in order to maximize the time in port (which is good), and most of the excursions were walking tours. Even the 'gentle' walking tours had quite a lot of walking. The pace was exhausting because so much was packed into each day. My husband was sore for a week after we got home in spite of the fact that he is currently putting siding on our house and climbing up and down the scaffolding every day.
A second problem which was totally out of anyone's control was the weather. We had a few sunny (although cold and windy) days, but most days there was some rain, and there was also sleet, hail and snow. The temperature was rarely above 50 degrees F. and it felt colder because of the constant wind.
The cabin was excellent - very comfortable. There was free internet on the TV and also many TV channels. The bow camera was the best I have ever seen and at night they used Infrared technology, so we could see even in the dark. There was a small fridge and a set-up to open wine bottles. There was a safe. There was an alarm clock and water on the nightstand. There were electric outlets for both Europe and US. There was a stool for me in the shower, and the was plenty of places to put things in the bathroom. There was a good sized closet with plenty of hangers. We could store our suitcases under the bed. After they took one of the chairs out, I could go in with the scooter and turn it around and park it to be charged, and most important, I could get in and out of the room on the scooter by myself because the door would stay open. The sliding windows were kept spotlessly clean so I could photograph the scenery through the window, or I could open the window and look out (although I didn't do that very often because it was cold outside). The bed was comfortable.