The Delta King is an authentic Paddle-wheeled riverboat which operated between San Francisco and Sacramento in the 1920s and 1930s.
Today, it's been renovated and serves as a hotel, restaurant, and bar for those with a hankering for history.
My husband and I stayed on the Delta King recently and it was an excellent experience! The rooms are small (as you would expect), but completely renovated and very clean.
See more at Discover Northern California: http://tinyurl.com/3la9ue4