There are 3 of us. Myself, my wife and her sister who is in a wheelchair. We had cabin 12170. Excellent cabin with lots of room for the wheelchair. I slept on the couch which was made into a single bed. It was surprisingly comfortable. Lots of room in the bathroom and shower was great for disabled.
Harmony is a busy ship with over 6200 guests. We decided to have breakfast in the main dining room which was on the lower MDR every morning. Excellent breakfast. We choose the line to be served but we could still use the buffet. Great service. We did go up to the Windjammer Buffet to look around. It was crowded but manageable.
Our Main Dining Room was The Silk on the top level. We had my time dining but where able to go at the same time to the same table and waiter every night. I liked the variety and the quality of the meals was exceptional.
See review above. 12170 is a great accessible cabin. I will try to include Pictures.