A double bed is a luxury that property hunters are increasingly unwilling to go without. The number of searches with the term "double bedroom" always increases around the end of August and beginning of September when students start looking for comfortable accommodation for the coming academic year.
While the term used to refer to one bedroom housing two separate beds, nowadays it is taken to mean one single room with a double bed as students and private room renters alike are less inclined to share their space with another person. Landlords and agencies would be wise to always remember to mention if the room, apartment or studio available has a double bed.