A "sofa bed" is a piece of furniture that can be used as both a sofa and a bed. It is designed to easily convert from a seating area to a sleeping area. Full definition
They feature one king or two full size beds (on request on arrival at the hotel) and a separate living room area with sofa bed in each bedroom. (vacationexpress.com)
There is also a comfortable double sofa bed in the lounge area. (wikiaustralia.com)
The room also had a double sofa bed with a table. (mybump2baby.com)