I was very impressed with the Oosterdam. I must us a power wheelchair, and the veranda cabin I had was fully accessible. The only problem area was the balcony - the door was rather heavy and difficult to keep open so I could get through with my chair. It was quite a treat to have room service every morning, and to have such a comfortable bed. The fresh fruit bowl was always full, too!
The spa facilities are very nice; a hydropool pass was well worth the money.
Every employee was very pleasant and helpful. As an example, in the dining room, each night a chair was pulled out for me so I could roll into my place. After the first night, there was a glass of iced tea at my place accompanied by a plate of lemon slices (I like lots of lemon in my tea). I never requested this - the wait staff simply noticed and provided.
Being disabled does have its advantages - it was fairly quick for me to embark and disembark in port. The tenders, however, are not terribly easy to use if one can't walk far.
The food was outstanding.
I was very pleased with 16 elevators available to me; it was very easy to explore the ship on my own. The Queen's Lounge, where my seminar met, was not very accessible.
All in all, I felt like a queeen and am looking forward to my next cruise on Holland America.
P.S. They have the best price for robes, which includes monogramming!