Favorite prom?
Stena Scanrail.
Why? Just do not laugh.
Comfortable berth, the best food between Denmark and Sweden, no tourists, peace and quiet. This requires a person who is at work and ferry business use.
We do not provide floating barn.
http://www.marinetraffic.com/ais/pl/shipdetails.aspx?mmsi=265285000&header=true