Our stay on Sally was great! We had anticipated spending more time in downtown Seattle, but we quickly learned that we actually preferred the area around Sally better! Ballard is great! We actually chose to cook on Sally two nights instead of trying to find a new restaurant, just because being on the boat was so much fun.
Initially I was concerned about sleeping in the smaller bedroom below the boat because it was far away from everyone else and it can be really dark, but I found out I actually appreciated having the space to myself and it was really comfortable down there. The accommodations upstairs were very comfortable.
I would definitely recommend checking out the locks and fish ladders just a 15 minute walk north of Sally. What I thought was just going to be a quick visit there turned into a couple of hours of fascinating learning.