|Subject: Double Room Europe|
a double room is a room for two people with a double bed, a twin room is also for two people but with two beds, and a single is a room for one person.
Sometimes they can offer a double room to a person who has requested a single, they might call it a superior single room or simply they donīt have enough single rooms.
Hope it helps,
rgds, Covadonga in Bilbao (Spain)